Don't Mix: Retinol with vitamin C, benzoyl peroxide, and AHA/BHA acids. AHA and BHA acids are exfoliating, which can dry out the skin and cause further irritation if your skincare routine already includes retinol.
While you're better off not mixing retinol with AHAs and BHAs (like glycolic and salicylic acid), retinol and hyaluronic acid are a perfect match. Combining these two actives can mean less fine lines and dry skin — which is a win-win, #letsbefrank.
You can combine niacinamide with all other serums and creams. You can use it with retinol, Hyaluronic acid, Vitamin C, BHAs, or AHAs. Niacinamide and retinol work well together.
Can hyaluronic acid and retinol be used together? Unlike many other skin care ingredients out there, hyaluronic acid and retinol can be used in the same skincare routine. Not only that, but using them together can help to lessen the severity of the side effects that often come with retinol usage.
Retinol and Benzoyl Peroxide
The ingredients can cancel the positive effects of each other out and leave skin extremely dry and irritated.
Use Retinol Only at Night and Wear SPF Every Day
"Retinol makes your skin more sensitive to UV rays and sunlight decreases the efficacy of the product," explains Bowe, who instructs patients to only use retinoids at night and be diligent about applying a daily broad-spectrum SPF 30 or higher during the day.
Retinol stabilizes when combined with vitamin C, increasing its effectiveness. Vitamin C and Retinol form a protective barrier over the skin that fights skin damage and aging. This barrier does not mean you can layer the two, one on top of the other, because irritation and sensitivity may occur.
There's no problem with using both retinol and vitamin C as part of your skincare routine, dermatologists say. In fact, Shirazi calls this combo a "power couple" when it comes to aging well.
Hyaluronic acid should be layered before retinol in case of dry or sensitive skin, as it helps create a barrier between retinol and your skin, offsetting irritation. Must-mention: let your hyaluronic acid serum dry before following with retinol as, if applied to damp skin, there's a higher risk of redness and dryness.
Combining Salicylic Acid and Retinol
While using salicylic acid and retinol in your skincare regimen is perfectly safe and can make it more effective, it may lead to dry skin when used too frequently.
If you're using these ingredients in separate products, it's recommended to apply niacinamide first and to then follow with retinol. Applying niacinamide first can help protect your skin from the effects of retinol.
“Hyaluronic acid plays well with most ingredients, while caution must be taken when using retinol in combination with alpha hydroxy and beta hydroxy acids, benzoyl peroxide, and some types of vitamin C.” Linkner echoes the tip about avoiding vitamin C.
Mix your retinol with your moisturizer, or apply your moisturizer first and then your retinol. Always use sunscreen the morning after you apply retinol. Your skin will be especially sensitive to sunlight, so it's important to protect it.
If you're determined to use vitamin C and retinol together in the same routine, you'll need to make sure to put enough time between them. It's also essential to apply your vitamin C first because it has the lower pH of the two ingredients.
Retinol (leave to absorb for 10-20 minutes)
Retinol is also an ingredient that should be left to absorb sufficiently into the skin before following up with another product. “It is important to leave a 10-20 minute wait time before applying the next product.
In short: yes, you can use vitamin C and retinol together; try retinol at night and vitamin C during the day—always with sunscreen.
AHAs and BHAs, such as glycolic, salicylic, and lactic acids should never be used with Vitamin C. Vitamin C is an acid, too, and is unstable, so the pH balance will be thrown off by layering these ingredients together and might as well be useless.
Rodney recommends looking for a gentle toner that contains hyaluronic acid, retinol, and vitamin C. "Hyaluronic acid plumps and hydrates dry, sagging skin, while retinol both increases collagen production deeper in the skin and increases the turnover of surface skin cells," she explains.
Is it safe to use retinol every day? For most people, yes — once your skin is used to it, that is. That said, there are some people who may not want to use it frequently or at all.
Order Matters: Serums are applied after cleansing and toning and before your moisturizer. If you don't use toner, then apply serum directly after cleansing. Keep It Simple: It's best to layer no more than two serums at a time. Too many layers can possibly prevent the ingredients from absorbing as effectively.
'The eye skin is very delicate and much less sebaceous than facial skin. It may become very irritated and if you apply it too close to the lash line you can even develop irritation of the eyes themselves' says Dr Shotter.
Also avoid retinol if you're going to be spending a lot of time in direct sunlight without proper sun protection. Retinol can make your skin more sensitive to the sun, so it's important to use sunscreen with at least SPF 30 every day — even when it looks cloudy.