Before you layer product atop product, think about the combination of active ingredients you’re putting on your face. There are some ingredients that work well in conjunction, while others are a big no-no. Here is a useful guide of what not to mix:
Don’t mix Vitamin C with…
Retinol: retinol is uber-active in a high concentration, so is vitamin C. Unless the product doesn’t list a marriage or vitamin C with retinol in its ingredient list, the two shouldn’t be layered one on top of the other. Both retinol and vitamin C can cause some dryness, peeling and flaking, so a combination of the two can cause a serious skin irritation.
Copper: Copper helps to firm and strengthen the skin by promoting collagen production. Vitamin C, in addition to stimulating collagen synthesis provides antioxidant protection. When copper is layered together with vitamin C the effects of each are canceled and render each other inactive.
Don’t mix Retinol with…
Alpha Hydroxy Acids: AHA’s and retinol can both increase skin sensitivity by way of chemical exfoliation. AHA combined with retinol can cause the skin to become aggravated and inflamed, so if you like to use both an AHA and a retinol, use the former in the morning and the latter at night.
Benzoyl Peroxide: Both retinol and benzoyl peroxide are great treatments that address acne, but when the two are combined together excessive peeling can occur, causing the skin to flake and pigment irregularly. The skin’s lipid barrier can also become compromised by use of excessively drying agents. Use either retinol or bezoyl peroxide as part of your nightly regimen, but not the two together.
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