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The Ordinary Multi-Peptide Serum for Hair Density 60ml 60ml

4.3 of 73 reviews


4 instalments of $7.50


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4 instalments of $7.50


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Introducing the first hair product by The Ordinary, the Multi-Peptide Serum for Hair Density! This concentrated serum strives to deliver fuller, denser, healthier and thicker locks by deeply penetrating the scalp to encourage circulation and promote healthy hair follicles. Made with a cocktail of potent natural extracts, peptide complexes and caffeine powder, this lightweight hair serum has an emollient base to ensure efficient penetration.

  • Cruelty Free
  • Vegan

What customers say

GREAT - 81% recommend

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Hair Concern:

  • Breakage and split ends
  • Fine or limp hair
  • Thinning hair

Hair Curl Type:

  • Curly
  • Straight
  • Very curly/African/Caribbean
  • Wavy

Hair Texture:

  • Fine
  • Medium
  • Coarse

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The Ordinary Multi-Peptide Serum for Hair Density 60ml

The Ordinary Multi-Peptide Serum for Hair Density 60ml

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Customer Reviews

Review & Earn

4.3 of 73 reviews

81% recommend this product

  1. 33

  2. 29

  3. 10

  4. 2

  5. 0

Most Helpful Positive

Used with J+S


I started to use this the same time as J+S hair and energy vitamins. I’ve noticed my scalp is less sensitive and there’s plenty of baby hairs. I’ve never been so happy to see frizzy baby hairs!!

Most Helpful Criticism

Not sure how to use


It's hard to apply on the scalp, I either put too much on the hair or splashed to my face.
  1. Second Bottle!


    I got this for my partner and this is his second bottle! The result is not very fast but it definitely works!
  2. Not sure how to use


    It's hard to apply on the scalp, I either put too much on the hair or splashed to my face.


  4. Oily


    Personally, this leave in style wasn't for me. I found it made my hair greasier and made little difference to how my hair grows.
  5. Love this!


    The Ordinary comes through again!
    Another fantastic product from TO! It makes my hair noticeably denser and smoother.
    I section my hair, apply a couple of drops and massage. I think of it as self-care before bed and really take the time to enjoy a little TLC for my head.
  6. So good


    I didn't have high hopes for this. My hair is fine and fragile. I usually find hair products so disappointing.
    this makes a difference. I find its better using one or two drops a night and concentrating on different parts of the scalp. I have so much less hair fall and its much much stronger and healthier. Been using the same bottle for 5 months so it's worth the $. If you use if every night (or most nights) in my case you will notice a positive change. It does make my hair a little greasy after night 4.
  7. Pretty good

    Not Bad

    I don’t have great brows but I reckon this serum helped them somewhat. I just rub in a drop of this after my skincare at night. The hairs I do have seem to be growing thicker and longer which improves the appearance of my brows.

    Definitely no miracle cure if you’re looking to grow new hairs overnight but this is a nice product to steadily improve the health of your hair.
  8. Used with J+S


    I started to use this the same time as J+S hair and energy vitamins. I’ve noticed my scalp is less sensitive and there’s plenty of baby hairs. I’ve never been so happy to see frizzy baby hairs!!
  9. Results!


    Almost every night for around a month, I have dotted this product on my scalp and massaged it in. I now have lots of regrowth coming through and the promise of thicker hair to come. Fabulous.
    It can be a bit oily feeling but when applied as directed, it soaks in and gives hair extra body... so long as only applied at the roots.
  10. It works


    I have tried a few hair growth serums and this is definitely one of the better ones. It is easy to apply and hair does thicken out. Will repurchase. price is so reasonable too.
  11. A nightly ritual


    Since discovering this a couple of months ago I’ve noticed less breakage and my hair is much more manageable. Love it!
  12. Helping my thinning hair


    I have really thin and curly hair and ever since I can remember it snaps in the middle. I have tried everything and since starting to use this product my hair feels stronger and healthier then ever.
  13. Nice


    This is a nice product very affordable and makes hair feel lovely. Not sure yet if it works but feels nice on the hair regardless
  14. Worth a try


    I’m on my second bottle after having to grow my hair back post chemotherapy. It’s hard to know if this has helped but having no hair made it easy to apply at first but now it’s a bit longer I’m not sure it’s getting into my scalp and not just my hair. My hair does feel quite thick but again unsure if this is just because it’s short. I’ll keep using as the bottle is large and lasts for a while so I feel like it’s value for money to hopefully have some results
  15. Use on thinning hairline


    My hair line was thinning and I would massage this in and now it’s fuller and thicker! This has become a holy grail hair product
  16. Feels fuller regardless of placebo effect


    I have coarse long hair that's not visibly thin but has certain areas which feel thinner than others. I also lose lots of hair in the wash that sometimes worry me. I've tried a handful of different hair growth or anti-thinning shampoo and conditioners, but nothing really dramatically change my hair volume. The Ordinary serum is the same, i.e. no dramatic difference but I do enjoy using it in the evening and brushing it in thoroughly. Whether it's the serum or the brushing itself I don't know, but I think my hair feels fuller!
  17. no results yet but still good


    Been using this for a few weeks and haven't seen any results yet but my hair (which is religiously bleached every 6 weeks) hasn't gotten any worse or thinner so thats a plus! I will keep using it though as it does feel nice massaging it into my scalp and brushing it through, it helps with my dry and frizzy hair too making it more manageable.
  18. No Significant change


    I haven’t see much changes after three months using this product, my hair grows at the same speed and the texture is the same.
  19. I think it works


    I have been using this with a few other products for thinning hair. As I am using this as well as others I cannot say its this product alone from working. But I have noticed that my hair does seem to appear thicker and I am not worrying about this thinning so much. At $30, you dont really have anything to loose giving this a go as other products cost over $200 for their hair thinning serums.
  20. Amazing results


    I’ve been using this (not religiously) for the last few months. I usually have very fine / thinning hair that looks like it has bald patches. I’ve noticed a huge difference using this. After using it at night my hair appears noticeably thicker in the morning. With ongoing use many hair appears thicker and denser and there is a lot of new growth.
  21. 2 months of consistent use.


    I apply about 8 drops all over my scalp every night and rub it through with my finger tips then brush my hair really well, I’ve now noticed a huge difference to the thickness and strength of my hair, it seems more manageable too. I love this product and have purchased some for my mum too and now she’s obsessed.
  22. Weird product

    I Hope

    I’m not sure about this product. The instructions say massage a few drops into scalp but I can’t understand how so little on such a small section of your scalp could be effective. I have only used it a few times so have no idea if it actually works. If you use more than a few drops you get really oily. Just an unusual product that is not very user friendly. To be honest I thought it was a serum for lengths and ends when I bought but that’s my fault really
  23. I think it works well


    I have only been using this for 1 week so it might be too soon to see any results. I think my hair looks a bit thicker. I will be interested in seeing if my hairdresser will notice a difference when I see her next week. I use this daily except on the day I wash my hair.
    Definitely don't put in any more than a few drops otherwise it will look greasy
  24. I think it works well


    I have only been using this for 1 week so it might be too soon to see any results. I think my hair looks a bit thicker. I will be interested in seeing if my hairdresser will notice a difference when I see her next week. I use this daily except on the day I wash my hair.
    Definitely don't put in any more than a few drops otherwise it will look greasy
  25. It works!!


    I was struggling with hair fall after having a baby.. I have started using it from last week and I can definitely see a difference.. I use it at night before bed.. must try if you have hair concern.
  26. On the fence


    Im not entirely convinced of this product, i have been using it for over a month however havent seen any improvements to my thinning hairline.
  27. Hair/Life Changing!


    I have fine, long curly hair. It is the kind of hair that looks voluminous because it springs out when dry, but as I am getting older (42) I am finding it is getting finer :(

    Like most curly haired chicks, I have spent my lifetime looking for products that fend off frizz and hold curl whilst also being lightweight.

    This product does wonders for my hair! It keeps the scalp feeling clean and healthy and even though I just rub it all into my scalp (I use more than a few drops tbh) it makes my full head of hair look healthier, stronger, less frizzy and shiny!

    I LOVE IT!
  28. Not for me


    I was really excited to try this but it just didn’t work for me. The first Ordinary product which hasn’t! I have fine, wavy hair which tends to get oily quickly and this product sometimes felt itchy on application and left it feeling extra dry. I suspect I may be allergic to an ingredient. You win some, you lose some. Back to argan oil.
  29. A little greasy


    This serum is not sticky, I'd shower at night and apply this serum after blow dry, the next morning when I wake up my hair feels a bit greasy near the scalp.
    Not sure if it made any difference to the hair growth.
  30. Maybe too early to tell


    I've been using this on specific areas of my hair which felt thinner. The serum is not oily but I avoid using it on clean hair because I find it can be a bit weighty. I haven't used it every night because of this and so haven't seen a dramatic difference over the past month. My hair at least has not become more thin in the meanwhile. Looking forward to seeing if there is a more dramatic change over time
  31. Non oily hair serum


    This serum works great for my hair. I have dry, coarse hair and this has helped my hair feel stronger and healthier!
  32. love it


    oh wow, I completely underestimated this. A few weeks from use and I am obsessed, definitely worth a try
  33. Actually a bit in love.


    I’ve been holding off doing this review as I wanted to use the product for a decent period of time to see if it actually does anything. Every night for the last month I have applied 6-8 drops spread over my whole scalp (I avoid dripping it along my actual part as I don’t want any kind of ‘wet look’), I then work through the product with my finger tips by massaging my scalp and then give my hair a good brush. I have quite thick hair, prone to some oilyness at the roots and quite dry ends due to lightening in the past, and working outdoors in the sun. I’m not sure if my hair has become ‘thicker’ in the period of time i’ve been using it but I can say its sooo much more manageable, softer, shinier and just all around healthier looking. What has surprised me is it actually doesn’t leave my hair looking or feeling oily, which I was worried about when first using this product. I actually feel I can go longer without washing my hair. It doesn’t have a weird or strong smell either. I will continue to use this and highly recommended the product.
  34. Like it


    I love the ordinary. This makes my skin more even, smooth, toned, and soft! An amazing product for the price and lasted a fair while considering the size of the bottle!
  35. Great


    Lovely non sticky oily drops
    Pleasant and not oily. Unsure if it’s working with volume yet as I have only used nearly a week but I feel my hair is more manageable.
  36. Not worth it.


    I have been using this serum as directed for a month. It didn't make my hair greasy and it doesn't have any smell. I can't say I noticed any difference while using it though.
  37. Loving it so far


    I've been using this product for about three weeks now. I have quite thin hair that is also very fine, light brown/dark blonde colour. Because of this, my hair shows oily roots quite easily. With this product, I find it does give a slightly oily look to my hair but others with darker/thicker hair might not find this and in any case, it can be fixed with a bit of dry shampoo or just used the day before you wash your hair. What I love most is the tingly feeling it gives your scalp as you apply it - so relaxing! It must be quite gentle though because I had a pre-existing patch of irritation on my scalp which it did not exacerbate. I apply just a few drops as the instructions say, so I probably am not covering my whole scalp each time but figure it will even out in the long run. It's early days (probably 5 or six applications total) so I can't say whether my hair is thicker, but I have noticed less hair falling out when I brush or wash it. I think I have noticed an improvement in texture too. I put a drop on my boyfriend's head but he is still bald.
  38. Great product


    I have been using this product for nearly a fortnight and have noticed a positive difference. It is not oily and actually has meant I wash my hair less. My hair does feel thicker and I’m really happy with it after just a short period of use!
  39. Great


    The results speak for themselves, my hair is shinier and healthy. I will repurchase and considering the price its fantastic.
  40. ITS great


    i did feel that it somehow worked to make some hair feel and look stronger; no dramatic effect but its mild, not oily and very assuring! LIKE IT!
  41. Volumizing


    I really love this product, I apply this nightly to my scalp in the problem areas in which I need density, you just apply a few drops, massage the product in and I go to the extra step by brushing it in. I wake up the next day with volume and my hair feels and looks thicker. I found when I apply to my hair when it is oily and hasn't been washed in a few days, the product doesn't work as well, but still works. I love The Ordinary range and I am so happy they have now created a product for hair as well.
  42. Good for root volume


    This has not decreased the amount of hair I loose, however it is pleasant enough to use and does not leave an oily residue behind. It gives hair a little more volume at the roots, but unfortunately does not affect the thickness of the lengths.
  43. Not oily at all!


    I was surprised at how much I liked this! My hair has been treated many times and I started to notice some thinning. This product has made my hair look and feel fuller. It is not oily but I agree with some customers, don't use on 'clean' hair..maybe the day after a wash. I am half way through the bottle and will definitely re-purchase.
  44. Amazing


    Bye bye frizz. I struggle with lots of frizz from my baby hairs and this really calms it down. I will be buying another bottle.
  45. I like


    I have repurchased, so I must like it. I don’t like using it on clean hair because it makes it look oily, but on the 2nd night I’ll put it on. Doesn’t affect my scalp or make it itchy which is good.
  46. Repeat buy - can’t live without it!


    This is my fourth bottle. It’s improved the health and vitality of my hair and thickness of my eyebrows. It has completely eradicated my husbands dandruff. Buy it
  47. Early days but happy with how it is going


    I have wavy asian hair and I am growing it out. The first time I used it, my scalp felt a bit itchy but it is okay now. Will take a while to see results, but I like including this as part of my self-care routine. Happy for now :)
  48. Improving strand by strand

    Tea Sommelier

    I bleached and dyed my hair in the spur of the moment, and didn't adequately protect my hair. The multi-peptide serum from The Ordinary seems to be doing a great job, I am using this together with argan oil though. I massage the multi-peptide serum into my scalp, and the argan oil through the length of my hair, and my hair is a long stronger (I am also more careful with my hair). I don't know which product is responsible for the stronger hair and the lower number of strands coming out, but I will continue to use both together, cause I don't feel like taking any more chances.
  49. Good stuff


    I use this at night on my scalp then wash out the next morning. Haven’t used long enough to see results but for the price and the reputation the Ordinary has to me I would recommend this product.
  50. amazing


    ok, i'm starting to think i should just buy everything the ordinary makes. This is better than the expensive products that do the same thing. Obsessed.
  51. Not sure yet


    I have been using this for about a month so far, I havent seen any changes in density but my hair is more soft and look healthier.
  52. Elixir of hair life!


    I've experienced hair loss recently due to weight loss. I've started using this 2 times a week, usually the night before I am going to wash my hair, or have it tied up, because occasionally it can leave a bit of oilyness if you apply too much.
    So what I do is drop it in spots all around my scalp and massage in before bed. It's volumised my existing hair and also somehow accelerated the growth of my new baby hairs. Would definitely recommend trying this out!!
  53. Great hair Serum


    I’m a male in my late 30s. Love this product. Easy to apply, not greasy or oily. Been using for a few weeks and my thin hair already looks and feels thicker. My scalp has also improved greatly.
  54. Winner!


    The Ordinary comes through again!
    Another fantastic product from TO! It makes my hair noticeably denser and smoother.
    I section my hair, apply a couple of drops and massage. I think of it as self-care before bed and really take the time to enjoy a little TLC for my head.
  55. Nailed It


    Have been using this for about 2 months. Notice that the serum smooth the hair and avoids frizz. I've also seen a major improvement in the amount of hair falling out, definitely seems to be strengthening the hair.
  56. I think it’s good


    I’m not convinced that this has increased my hair growth and it hasn’t stopped my recent bout of effluvium, but it does seem to help the condition of my scalp and crown hair, so i’ll keep using it.
  57. Value for money

    Linty Joseph

    What more to say, my hair fall stopped and less visible scalp I have now.
  58. Makes hair shiny


    I don't know if this product is doing a whole lot for growth but it does take away a lot frizz and makes my hair super soft! Looking at other reviews can't wait to try on my eyebrows and eye lashes to see if it promotes growth.
  59. Smooth hair


    This makes my hair less frizzy and shinier. My hair looks healthy as a result. Totally recommend it
  60. Eliminates dandruff and imparts a beautiful sheen


    Ok, first off, it is great to help with thickening your eyebrows. As someone who has struggled to improve my fair, thin, patchy eyebrows this has been a dream. Secondly, my husband is obsessed. He has been blessed with AMAZING hair and has thick stunning dreadlocks (made wo chemicals or wax). Every hairdresser we’ve been too drools over his hair and wants to touch it. However, he has had some dandruff because his hair is so thick. THIS HAS ELIMINATED IT WHERE NOTHING ELSE HAS!! it has makes hair glossier, healthier and sit better. Get it. Great price point and effective
  61. Good stuff


    I have quite fine hair and I use this most nights and while I can't say that it does anything for sure, it does feel like it smooths my hair and adds a degree of thickness to it.
    I would recommend and would probably buy again as it definitely added shine and it felt smoother.
  62. Healthier happier hair!


    I have very fine hair which I colour regularly and errs on the dry side. Logically I know that nothing on the planet is going to change that, so I was sceptical when I bought this. After several weeks of use my hair feels fuller, I don’t have as many fly aways and I’ve stopped using volumizing products when styling!! I’m converted!!
  63. Good serum for hair


    Have been using this for about 2 months. Notice that the serum smooth the hair and avoids frizz.

    I am yet to see a major hair growth,will follow up with the routine for few more weeks
  64. Can’t see any difference


    I love The Ordinary skin care products so was excited to try this. I’ve been applying the drops at night to the scalp where I have fine hair framing my face. I’ve been doing this per instructions for the last 3 weeks. Apart from my hair being oilier, I’ve not seen a change. Maybe it is too soon so I will continue. For the price of this product, I don’t think I would recommend it.
  65. So far so good


    I’ve only been using this for a couple of weeks. I’ve noticed a little less fall out. My hair doesn’t look a whole lot thicker but my roots feels softer. Definitely going to keep on using
  66. Easy to use and not oily!


    I bought this just to see what it was like, sort of expected it to be thick and oily but it’s actually quite thin, watery and doesn’t make my hair oily at all. I’ve actually noticed some little baby hairs sprouting since I’ve started using it! Highly recommend!
  67. Good product for fine hair


    Great product; non greasy in fine hair. 2 weeks is an already seeing some signs of hair thickening.
  68. It works!


    I have fine, coloured hair and have recently noticed a patch of thinning hair at my hairline. Since purchasing this, every night, I would apply one drop of the product to the scalp where the thinning patch is, rub it in and brush it through. I don't find it to be greasy. My hair feels thicker and there are several new hairs popping up after only a couple of weeks.
  69. Good results


    I've been using this product for a couple of months now on my fine hair. I don't necessarily feel like my hair is any fuller but I've definitely noticed a difference - my hair looks healthier and my scalp is improved as well.
    I used to get a bit of dandruff after a couple of days of not washing my hair; but since using this product, that doesn't happen at all. I can use dry shampoo to extend my wash time much longer and never get any flakiness. So I figure my scalp must be much healthier for using it.
    Once applied, it may make your hair look a little oily but, when you wake up in the morning, it's completely disappeared. So definitely use it at night, rather than the morning.
    Definitely worth a try.
  70. Great for eyelashes


    I really like this stuff, have been using on my eyelashes and have noticed a difference. Tried on my hair as well but didn't notice as much of a difference, although it did leave my hair feeling nice.
  71. Does what it says!


    After two weeks, fine baby hair is growing along my hairline [I have mild post-partum hair loss] and at the back of my crown. This product isn't greasy and a little goes a long way.

    TIP: Try to leave in as long as possible before washing - as in, a couple of days.
  72. Works wonders for fine hair


    I have fine hair (but a lot of it) and my hair is prone to breakages as I colour my hair.

    My hair definitely felt denser after a few weeks, and running my fingers through my hair from the roots to the ends you can certainly feel a difference from where the product is working. It can make your hair a little oily, so I like to apply mine in 2 stages. I do the first few drops around the base and back of my head and really rub it in and then I apply a smaller amount to the top of my head and around my hairline to help limit the greasiness. This is one of my all time favourite beauty products so far.
  73. Good


    I’ve only been using this product for a week but I’ve noticed a small difference already. Hair just feels a little fuller at the roots
  74. Not my favourite


    Personally, I didn't really think this serum did much for me. It just left my hair feeling oily and I didn't really see any benefits from the product.
  75. Review & Earn
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