Facial oils are a very new addition to the typical skincare routine. Strangely, many people can't believe they ever lived without oils. If you're new to using a facial oil, you may be confused about when to use it. Should you apply oil before or after moisturiser? Can you use oil both morning and night? Does oil replace serum? All of these questions are easily understood once you've gotten a grip on the skincare layering rule.
The Skincare Layering Rule
Every skincare product has a different molecular structure. The order in which you apply toners, creams, and serums depends heavily on the thickness, or viscosity, and other properties of each product.
For example, you wouldn't want to use a toner after a moisturiser. The toner will only break down your cream or lotion, and neither product will end up having much of an effect on your complexion.
Skincare products are best applied from thinnest to thickest, with the final layers providing increased barrier function to your skin. Depending on which products you use, application based on the skincare layering rule should generally follow this order:
Emollient or Barrier Moisturiser
As you can see, facial oils are the last step of your skincare routine. If you used a facial oil before a water-based product such as a moisturiser, the water-based product wouldn't penetrate your skin as effectively or this is the best order to apply skin care products.