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Cosmedix Define Age-Defying Treatment 45g

4.6 of 54 reviews


4 instalments of $31.25

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4 instalments of $31.25

Or 4 instalments of $31.25 with LEARN MORE

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Cosmedix Define Resurfacing Treatment is a unique stimulant pushes the activity of the skin to a very active yet well tolerated level of exfoliation. This is a fabulous treatment for all skin types, but particularly problem skin and sun damaged skin, or for a radiance boost.
  • Cosmeceuticals
  • Cruelty Free
  • Artificial Fragrance Free

What customers say

SUPERIOR - 90% recommend

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  • 20s
  • 30s
  • 40s
  • 50+

Eye Concern:

  • Age Prevention

Skin Concern:

  • First signs of ageing
  • Pigmentation, uneven skin tone
  • Wrinkles and loss of firmness

Skin Type:

  • Dry
  • Normal to dry
  • Normal to oily

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Questions & Answers

(2 Questions)

Cosmedix Define Age-Defying Treatment

Cosmedix Define Age-Defying Treatment

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Customer Reviews

Review & Earn

4.6 of 54 reviews

90% recommend this product

  1. 38

  2. 12

  3. 4

  4. 0

  5. 0

Most Helpful Positive



Very happy with this. Have repurchased it a few times.

Most Helpful Criticism



I got this product because I wanted to start using retinol my acne prone skin. I was using it for over a month however I dint t see any result on my skin despite much more pimples. I think The ordinary retinol does better job and its much cheaper.
  1. Great introductory retinol


    verified purchaser
    Used this is as one of my first retinols and really loved it, noticeable difference without being too harsh or reactive on my skin. I've since moved on to something more potent but to be honest I can't even tell the difference between the stronger retinol and this define resurfacing treatment.
  2. I prefer my usual brand


    A quality product but I prefer my usual brand. I also like to keep the acids and the retinol usage separate but for somebody who can tolerate retinol it would probably be a good product. I receive this as a very generous sample.
  3. Fine


    I got this product because I wanted to start using retinol my acne prone skin. I was using it for over a month however I dint t see any result on my skin despite much more pimples. I think The ordinary retinol does better job and its much cheaper.
  4. Fine


    I got this product because I wanted to start using retinol my acne prone skin. I was using it for over a month however I dint t see any result on my skin despite much more pimples. I wont buy it again for this price point, used better ones.
  5. My favourite night treatment


    verified purchaser
    This is my favourite night treatment, I use it every night and it is so moisturing and makes my skin feel so smooth. My skin glows in the morning. Be careful though if your new to retinol products as you need to build up to nightly use. I started out only using it once a week and built up from there. It most effective using it every night.
  6. New skin!


    This product helps to 'freshen' the skin, used sparingly and fazed on and off in usage it will brighten and clear the skin. I cannot currently use this as I am on Roaccutane, but when I finish it I will definitely continue to use mine. This can tingle quite a bit if you are super sensitive skin type like me, but nothing unbearable and didn't cause breakout or adverse reactions.
  7. Good retinol


    verified purchaser
    Easily absorbed and doesn't sting like other retinols....would definitely buy again but might try something stronger next time.
  8. Soft, clear skin


    Great intro to retinol. Best one I’ve used so far. It goes on light and absorbs straight away. Only tingles for about 10 seconds. I layer a moisturiser over this and in the morning, my skin is so smooth, glowing and clear. Going to try refine next which is the next level up in this range now I’ve been using this for about a year. A bottle lasts ages so a good investment.
  9. Great introduction to retinol.


    After seeing a skincare specialist this was the first retinol product I ever purchased. I do not have sensitive skin but it definitely took a little while for my skin to adjust to this product. For the first week or two the product made my skin a little dry, red and flaky but after a month or two I did notice my skin was smoother and plumper. I have now moved onto a stronger more expensive Cosmedi...
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  10. Perfect beginner retinol


    I had never used a retinol before, but wanted to give one a go. Mind you, one of the reasons I hadn’t used one is because I was scared for some reason. I think all the stories of people over using it and “burning their faces off” scared me off. After doing some research I settled on Cosmedix Define and I am so happy I did. My skin has handled it well and I haven’t had any trouble with it.
  11. Great for Smooth Skin


    Cosmedix Define makes my skin feel as smooth as a baby's bottom. It feels nice to apply and is not irritating to the skin. This product provides retinol without the dry and flaking skin that can sometimes come with it.
  12. Not my favourite


    Very pricey but it’s decent... I like this but probably wouldn’t repurchase it unfortunately.
  13. I don’t like it


    I’m not liking this, I haven’t noticed any improvement in my skin and I also really don’t like the smell. It’s quite unpleasant
  14. Intro to Retinol


    I bought this product as my first introduction to Retinol. I feel it does a good job, I love the smell of it and how moisturizing it is. I'm ready to go up to Refine now and hopefully so better results.
  15. Smoothed my skin quickly


    I have been using this twice a week and have noticed my skin changing already. My chin area suffers from hormonal breakouts and the skin can be quite bumpy. The area is smoothing out already after only two weeks of use. Would definitely recommend!
  16. Great so far


    Have only been using this product for a week but i really like the feel of this serum and wake up with noticeably brighter and clearer skin.
  17. Really Works


    I love this product, it has improved my skin tone and my skin feels smoother. I find that my moisturiser absorbs better and makeup goes on more evenly when I use this.
  18. Lovely


    This is so great on the skin. I really really like it although it kind of has a weird scent. Really great product! Loving it.
  19. Feels amazing


    I have dry sensitive skin and have tried a lot of products for hormonal acne which comes up around my chin and forehead.
    It’s not super bad but I feel like my skin gets bumpy and yucky.
    I have been using this cream on and off sometimes two or three days in a row then stop for a couple of days. I use over it the Avene Triacneal expert cream at night.
    My skin doesn’t react to th...
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  20. Nice texture


    I've tried a few retinols. This one feels like a quality moisturiser as well, doesn't dry out my skin like some others. I get a little flaky/ dry skin a day or two after using it, but nothing that's not easily fixed. Only downside is the price, it's quite expensive for what it is.
  21. Cosmedix Define Resurfacing Treatment


    Very light but very effective the same time,really moisture my skin,lovely under make up.
  22. Early days but feels nice


    I have been using this product twice a week for a couple of weeks now. It goes on nicely and you don't need to use a lot, which is helpful given the price. I have dry sensitive skin but seem to react well to it, and my skin feels lovely and hydrated in the morning after using it. Look forward to seeing how it goes over the next few weeks.
  23. Effective retinal treatment


    I use this once a week. I don't think you would need more, especially if you are using the other wonderful Cosmedix products.
  24. Best Vitamin A I've Come Across


    This is the best Vitamin A/Retinol I've ever used. A lot stronger than my usual aspect one but the results are so worth it. Worth the buy.
  25. Serious improvement to skin texture


    My beauty therapist recommended this serum for night time to help with skin texture. I have generally clear skin that is slightly dry, but suffer from hormonal acne on the chin and slightly bumpy skin texture on the jaw line. I have introduced this product every second night for a week (as per therapist's instructions) and have already noticed significant improvement in my jaw line texture. Very h...
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  26. Smells awful!


    This cream leaves my skin smooth and it feels very rich, but I can’t stand the smell of it! I’m not sure if they all smell this way or if I have a bad batch but it’s so gross. It puts me off using it
  27. Great product


    I have fairly sensitive skin which is quite dry, this product is creamy in texture and feels hydrating when it’s put on, it works overnight so in the morning your skin feels amazing! So soft, clear and even. I was definately suprised!
  28. My skin looks great


    This leaves my skin feeling so smooth. I use this only at nighttime and when I wake up my skin looks clear and bright and glowy. Would definitely recommend
  29. Good quality retinol


    I started using Define as recommended by my dermatologist and went from sample size to two bottles of Define later. Don't get put off by the price as the large tube lasted me over 6 months and you definitely get your money's worth. A little goes a long way. It comes out like a thick cream and is easily spread over your entire face. I found using define my skin was more plump and lines in my forehe...
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  30. Noticeable difference to skin


    Been using a generous sized sample of this, a little goes a long way. This is a relatively thick cream, it glides on the skin (almost like a primer) spreads easily and dries down to a weight loss smooth finish. I only use at nights and have noticed my skin overall looking better. Clearer, tighter, more refined. Will continue with my sample then will purchase the full sized
  31. Best retinol !


    I have used this product for over two years and it is fantastic. My skin is a lot smother when I apply every second night, and I have noticed the difference when I have stopped using it temporarily. Highly recommend. Tube lasted me almost 12 months.
  32. Amazing!


    After a few recommendations of this I thought I’d give it a go. It definitely didn’t disappoint my skin had more clarity and smoothness after one night it also felt moisturised. I’ve been using it every few days to build up a tolerance to the retinol, no flaking so far like I thought I might. I can’t believe how quickly I’ve fallen for this product and how much of a difference it’s made in my skin...
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  33. Worth the dollars


    This is the second time I have purchased this product, I used another brand of vitamin A and just don't think it worked as well. I started using this one night a week and then after a few months went to two nights and now use it four nights a week. I have found it to be the best anti-ageing product I have ever used, it helps with skin texture and I do believe that is has slowed down any fine lines...
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  34. Gentle retinol product


    I really like this product because it is gentle and effective, and a little goes a long way so for the price it is worth it. I add it to my night time routine a couple of nights a week and I've noticed a difference in the smoothness and clarity of my skin.
  35. Heaven


    I bought this product as my facialist recommended it. After using it my skin looks clearer and hydrated. It contains products that are highly recommended for anti aging products.
  36. Amazing introduction to retinol!


    I had never used a retinol before and this baby left my skin so soft and supple straight away. I’d put it on before applying moisturiser before bed and I fell in love. It introduced me to the cosmedix brand and I could not be happier.
  37. Brilliant


    I use define every second night and my skin adores it! Such a gentle exfoliation whilst I sleep and I mix it with creme de la mer. Amazing product
  38. Great product


    I was recommended this by my nurse practitioner for my acne. It has been really great. Steep price, but you only need a little so it will last a while. Great investment for anti aging too!
  39. Results delivered!


    A very potent product! START OFF SLOWLY and you will see results! :)

    I have combination skin, frequent breakouts and some dryness and this Resurfacing Treatment really delivered the results I desired.... clearer skin without flakiness! :)

    I started off with only using Define twice per week and moving up slowly from there :) You definitely need to use a sunscreen during ...
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  40. Lovely


    This has been so so lovely to use. I feel like I can already see a difference just after a week.
  41. it works


    Skin type: Oily/combination

    This product didn't disappoint, noticeable results after a few uses.
  42. Love it!


    I was recommended this product by my beauty thearapist and it does not disappoint! You feel the acids tingling away once you put it on but that doesn’t last long. It’s a very nice textured cream that feels really lovely on the skin. I have sensitive skin and it hasn’t been me break out at all. I haven’t been using it long enough to tell if it’s hindering the age process but I’m very happy with my ...
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  43. Game changer

    Ms Zig

    I was recommended this product by my beauty therapist I really like it, does exactly what it’s says also evens my skin tone and softens my fine lines.
  44. Trusted brand for a step by step treatment


    I'm 46 years old and had recently decided to use a Retinol product in conjunction with advice from my Cosmetologist. I had thoroughly researched the how's, why's and usage of Retinol and came to understand that this was not to be a product to be used without caution!

    I have used the Cosmedix brand for many years now and have been very happy with the results. Not to mention that Cosmed...
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  45. Use this product for all the right anti aging ingredients


    I bought this product as my facialist recommended it. After using it my skin looks clearer and hydrated. It contains products that are highly recommended for anti aging products. Being a product that specialists use tells me it’s unlikely to contain filler products as many brands do. I use it with a dermal roller for even better results
  46. Good gentle retinol product


    I started using this product on the recommendation of my facialist when my skin was irritated and peeling from retinol use. She explained that the retinol in this product is encapsulated and therefore less irritating than conventional retinol products. This product has a nice cream-like consistency. I use it after cleansing at night and find that I don’t need to use moisturiser over the top. It ti...
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  47. Greal when your main concern is texture


    Define is a true hero product and it's a great one when you are looking for only one product to do the work of two or three producto in your nighttime routine. It contains several different alpha hydroxy acids combined with Cosmedix's patented AGP retinal complex (an intelligent encapsulation technology which allows skin to effectively use the retinol with minimal irritation). The result is skin ...
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  48. AMAZING!!!


    This is a must have product, you will see a difference from the first time you use it.
  49. Amazing, works fast!


    I was given a sample of this product by my beauty therapist because my skin is sensitive and I react to a lot of products. The sample worked so well I had to buy it!
    Already, over 3 nights it has changed my skin so much- more refined, less congested, has healed my pimples, more even skin tone and I’m now barley needing to wear make up. FOr a gal that always covers up that’s amazing.
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  50. AMAZING!


    The difference in my skin since using this product (together with the Aspect Extreme B17 serum) is hands down amazing!!!! I have always struggled with blackheads, whiteheads and pimples, even in my 30’s and have tried many brands without any result. I highly recommend this product.
  51. Holy Grail!


    This is my absolute favourite night time treatment. I use a couple of times a week after cleansing and wake with wonderfully smooth, clear skin. It is a little expensive, but a little definitely goes a long way - one tube lasts me around 9-10 months.
    I use this on recommendation from my skin therapist.
  52. Great product, but use caution


    I love this product, I use it every second night, and it's great for spot treatment too. Having said that, I did have to build up to being able to use it this often as your skin has to adjust, and I did so under the instruction and guidance of my dermatologist.
    This product leaves skin smooth and has a lovely texture, but can be drying, and create redness if overused.
  53. Review & Earn
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