What ingredients should not be mixed with vitamin C?
Which active ingredients should be combined with vitamin C?
1. Vitamin C and Hyaluronic Acid
Hyaluronic acid is an excellent ally of vitamin C. Hydrating and plumping, it enhances the action of vitamin C without interfering with it. Apply your vitamin C serum , followed by a hyaluronic acid moisturizer for luminous and plump skin.
2. Vitamin C and Niacinamide
Long considered incompatible, the combination of vitamin C and niacinamide is actually beneficial. Niacinamide soothes the skin and improves the skin barrier, complementing the antioxidant action of vitamin C. Apply them together or one after the other without fear.
3. Vitamin C and Tranexamic Acid
Tranexamic acid is a brightening active ingredient that targets dark spots. When used with vitamin C, it enhances its action on hyperpigmentation and evens out skin tone. For optimal effectiveness, apply your vitamin C serum first, followed by your tranexamic acid treatment.
4. Vitamin C and Sun Protection
Vitamin C protects against oxidative stress, but it is not a substitute for sunscreen . Combined with SPF protection , it strengthens UV protection and prevents premature skin aging. Always include SPF in your morning routine after your vitamin C serum.
Which active ingredients should be avoided with vitamin C?
1. Vitamin C and Retinol
Retinol is a powerful anti-aging ingredient, but it can be irritating. Using it with vitamin C increases the risk of redness, dryness, and sensitization . To avoid these side effects, apply vitamin C in the morning and retinol at night .
2. Vitamin C and Glycolic Acid (AHA)
AHAs, especially glycolic acid, are powerful exfoliants that can make skin more reactive. When used in combination with vitamin C, they increase the risk of irritation and sensitization . It is recommended to use vitamin C in the morning and AHAs in the evening .
3. Vitamin C and Salicylic Acid (BHA)
Salicylic acid is great for oily and blemish-prone skin, but it can be too harsh when combined with vitamin C. To avoid redness and dryness, apply these actives at different times of the day or use salicylic acid in a rinse-off cleansing gel .
4. Vitamin C and Benzoyl Peroxide
When used for acne, benzoyl peroxide can oxidize vitamin C and reduce its effectiveness . If you are using benzoyl peroxide, apply vitamin C in the morning and your acne treatment at night.
Can you layer several vitamin C treatments?
Too much vitamin C can have the opposite effect of what you want and become pro-oxidant , causing sensitivity and inflammation . It's best to opt for a single, well-formulated vitamin C serum , followed by a complementary treatment such as a moisturizer or sunscreen.
Conclusion
Vitamin C is a powerful but tricky ingredient to combine. To avoid irritation and maximize its benefits, combine it with gentle active ingredients like hyaluronic acid or niacinamide , and avoid blending with harsh exfoliants. By sticking to these combinations, you'll optimize your skincare routine for radiant, healthy skin.