What products should not be mixed with retinol?

Retinol is a vitamin A derivative widely used in cosmetics for its anti-ageing effects and its action on cell renewal. It stimulates the production of collagen productiondiminishes fine lines and wrinkles, reduces pigmentation spots and improves skin texture. Its gentle exfoliating action also unclogs pores and regulates sebum production, making it a popular ingredient for treating acne.

However, retinol is a powerful ingredient that can cause irritation, skin sensitivity and redness if misused or combined with certain other active ingredients. Here are the combinations to avoid to maximize its effectiveness and protect your skin.

1. Retinol and Alpha-Hydroxy Acids (AHAs)

Alpha-hydroxy acids, such as glycolic acid and lactic acid, are chemical exfoliants that remove dead cells and promote cell renewal. However, their combination with retinol can be too aggressive for the skin, leading to redness, excessive dryness and increased sensitivity.

Solution: Alternate their use, applying AHAs in the morning and retinol in the evening, or using them every other day.

2. Retinol and Beta-Hydroxy Acids (BHA)

Salicylic acid, a BHA, is often found in acne care products for its exfoliating and anti-inflammatory properties. Like AHAs, it can irritate the skin if combined with retinol.

Solution: Use alternating applications to avoid irritation and preserve the skin barrier. Another option is to apply a rinse-off BHA cleanser, followed by retinol.

3. Retinol and Vitamin C

Vitamin C is a powerful antioxidant that fights skin ageing and brightens the complexion. However, combining it with retinol can be problematic, as these two active ingredients have different pH levels, which can reduce their respective effectiveness.

Solution: Apply vitamin C in the morning and retinol in the evening to enjoy the benefits of both ingredients without risking irritation.

4. Retinol and Niacinamide

Unlike the other active ingredients mentioned, niacinamide (vitamin B3) can be combined with retinol, but with caution. It helps strengthen the skin's barrier and reduce inflammation, which may ease the irritation caused by retinol. However, some products with unsuitable pH levels can create incompatibilities.

Solution: Check the formulation of your products and start by using them at different times before considering combined use.

5. Retinol and Benzoyl Peroxide

Used to treat acne, benzoyl peroxide can cancel out the effects of retinol and cause excessive irritation when applied together.

Solution: Apply benzoyl peroxide in the morning and retinol in the evening, or alternate them depending on your skin's tolerance.

6. Retinol and sun exposure

Retinol makes the skin more sensitive to UV rays, increasing the risk of sunburn and skin damage. It is therefore essential to use sunscreen daily when incorporating retinol into your routine.

Solution: Always apply sunscreen with a minimum SPF 30 in the morning, and avoid prolonged exposure to the sun.

How to use retinol

• Introduce it gradually Start with an application twice a week, then increase the frequency according to your skin's tolerance.

• Moisturize your skin Use a moisturizing cream to minimize the side effects of retinol.

• Choose a gentle routine Avoid combining several powerful active ingredients to preserve the skin barrier.

• Consult a dermatologist In case of doubt or persistent irritation, seek professional advice.

Conclusion

Retinol is an effective ingredient in the fight against skin aging and skin problems, but it must be used with care. Certain combinations can reduce its effectiveness or cause adverse reactions. By adopting an appropriate routine and avoiding risky combinations, you can take full advantage of retinol's benefits without compromising your skin's health.