Ah, retinol. It's one of the most revered skincare ingredients that dermatologists love to recommend. Also known as vitamin A, what makes retinol so great is that it promotes skin cell turnover, which can help improve the appearance of fine lines, wrinkles, uneven skin texture, dark spots, and acne. The only catch? Retinol can be extremely irritating.
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. Finally, because vitamin C protects skin from environmental aggressors and retinol repairs and rebuilds skin, they're best used at opposite times of the day. More on that in a second. This ingredient also brightens the skin and can even lighten dark spots. When vitamin C is used with other antioxidants like vitamin E, it can boost results and efficiency.
The same goes for wearing vitamin C under sunscreen. In contrast to vitamin C, retinol and retinoids build collagen and help repair the skin, so they're best used overnight.
Since vitamin C thrives in the daytime, it's best to keep these ingredients separate from each other because they have such different functions. Salicylic, glycolic, and lactic acids are all effective exfoliants that can improve skin texture, tone, and in the case of SA, treat acne.
That being said, all three of these acids can dehydrate and irritate skin. Look for ceramides, petrolatum, hyaluronic acid, and glycerin to hydrate and soothe skin," says Dr. Using a product that combines multiple low-level AHA and BHA acids can be an extremely effective way to exfoliate and unclog pores.
Vitamin C is designed as a morning product. But what you cleanse with beforehand matters, too. Not only are you missing out on protection from free radicals, which a review published in July in The Journal of Clinical and Aesthetic Dermatology found ages skin, but well-formulated vitamin C products like Skinceuticals C E Ferulic are expensive.
One example is using two benzoyl peroxide acne products. Another example is applying a glycolic acid mask and then finishing with a cream containing mandelic acid, as both are AHAs. Increased irritation is a sign that the skin barrier is disrupted, which only boosts the likelihood of suffering side effects from active ingredients.
For most people, though, this is going to be too harsh. Talk to your dermatologist, who can help you build a regimen that works — and makes your skin feel great, too. By subscribing you agree to the Terms of Use and Privacy Policy. Health Topics. Health Tools. Smart Skin. You might think retinol and acidic ingredients like alpha hydroxy acids might work well together since they both make claims to reduce the appearance of fine lines and wrinkles, but it is possible to have too much of a good thing.
At their core, retinol and chemical exfoliants do just that: exfoliate the skin. Using two exfoliants together? No go. This can lead to redness, irritation, sensitivity, and even dryness and flaking.
There is also the irritation potential and sun sensitivity risk of different retinol formulations and hydroxy acids that need to be taken into account. What is pH? Essentially, it helps to tell how acidic or alkaline a product is. The lower the pH, the gentler the formula, which helps to cleanse the skin without stripping it of its natural oils.
Why the mini lesson on pH? Well, pH is very important when it comes to vitamin C and its effectiveness.
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