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.
According to skincare guru and best-selling author, Caroline Hirons, you should allow 20 plus minutes before moving on to the next step of your routine.
There is no hard and fast rule about using retinol or moisturizer first. The order you apply it in depends on the actual product you're using. Retinol can be included in all sorts of different formulas, such as retinol creams and retinol serums, and how you apply them will vary.
Don't Mix: Retinol with vitamin C, benzoyl peroxide, and AHA/BHA acids. AHA and BHA acids are exfoliating, which can dry out skin and cause further irritation if your skincare routine already includes retinol. As for benzoyl peroxide and retinol, they cancel each other out.
Peeling, redness, and irritation are common onset reactions for some people when they first start to use retinol. Some reactions get so bad that the common term used to describe the list of effects has been dubbed the “retinol uglies”. Note from a skincare expert: Many things in life get worse before they get better.
For prescription retinols, you'll typically apply this step onto dry skin before your moisturizer—but always check with your dermatologist. You may be advised to use it after a moisturizer, which buffers the retinol and lessens risk of irritation.
Niacinamide and retinol can be combined in one product, which may be easier and more convenient. But they're also available as separate products. If you're using these ingredients in separate products, it's recommended to apply niacinamide first and to then follow with retinol.
It's perfectly safe and okay to use hyaluronic acid and retinol together. Using skin care products that contain these ingredients together shouldn't cause any interactions or side effects. Hyaluronic acid and retinol are one of the most popular skin care combinations.
Using niacinamide before retinol works well. So does combining them into one product. A 2016 study found that a product containing retinol, niacinamide, hexylresorcinol, and resveratrol improved fine lines, sallowness, wrinkling, hyperpigmentation, and skin tone.
And washing your face is necessary to remove any retinol or AHAs you wore overnight. Bottom line: Not washing your face in the morning is a mistake. A thorough a.m. cleanse ensures your products will work like they're supposed to.
STEP 4: APPLY YOUR HYALURONIC ACID
If you are using it in serum form, you'll apply it immediately after your retinol. If it is part of your moisturizer, it will be your last step. That allows it to truly harness its power as an emollient and seal in both your other products and moisture.
After a month or so with no side effects, you can likely use it every day if you want. Zeichner also suggests only using retinol at night. “The evening is a time of rest and repair, and cell turnover is at its peak,” he says.
Any reactions will likely occur within a day, but could take up to two or three, so we recommend waiting a few days before full-face application. You'll want to look out for anything uncomfortable or weird like redness, bumps, or itchiness.
Purging is slightly different, appearing on the skin mostly as blackheads or small skin-coloured bumps just under the surface of the skin. But it is also possible for purging to cause similar spots to a breakout, too.
Niacinamide and retinol can be used together with a five-minute gap between application but are likely to be just as effective if you use them at separate times of the day.
Norwalk, CT, dermatologist Deanne Mraz Robinson, MD, stresses these ingredients are great when they hit your skin solo, but a definite no-no when applied together. “A mixture of retinoids/retinols with alphahydroxy acids, like glycol, can lead to extreme irritation and redness.”
Serum and Moisturizer: 1 minute
Goldenberg's go-to recommendation for timing between serums and moisturizers is about one minute. This wait has the same reasoning: Sixty seconds — give or take — gives each product a moment to delve into your pores.
It's best to apply Vitamin C before Retinol, as Vitamin C has a lower pH than Retinol. Once your skin absorbs the Vitamin C serum, your skin will return to its regular pH levels after 30 minutes or so. (You want your skin to return to its normal pH levels so vitamin C doesn't lower the pH of retinol.)
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.
Generally, it takes a few weeks to see results, but some OTC options may require months of regular use. Most dermatologists said you'll need to use retinol for a few weeks before you see results, but you should see improvements by 12 weeks with most products.
Retinoids work best if you use them daily. Specifically, they should be used at night because some types are deactivated by light and air. It's important to start slowly and allow your skin time to adjust. Using too much too quickly can cause redness, dryness, and irritation.
After two to six weeks of using tretinoin, it's usually okay to start using an exfoliant. However, it's best to use exfoliating products as sparingly as possible while using tretinoin to avoid potentially irritating your skin.
Buffering—or layering a retinol product between two layers of moisturizer—can also help minimize retinol burn. “Benefits will be seen in about four to six weeks of consistent, nightly use,” she says. You might also get more breakouts once you start using retinoids. Keep calm and stick with it.