What products should not be mixed with retinol?

Retinol is a vitamin A derivative widely used in cosmetics for its anti-aging effects and cell renewal. It stimulates collagen production, reduces fine lines and wrinkles , reduces dark spots , and improves skin texture. Its gentle exfoliating action also helps unclog pores and regulate 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-Hydroxylated Acids (AHA)

Alpha hydroxy acids, such as glycolic acid and lactic acid, are chemical exfoliants that remove dead skin cells and promote cell renewal. However, combining them with retinol can be too harsh 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-Hydroxylated Acids (BHA)

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

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

3. Retinol and Vitamin C

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

Solution: Apply vitamin C in the morning and retinol at night to get the benefits of both ingredients without the risk of 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 barrier and reduce inflammation, which can alleviate irritation caused by retinol. However, some products with an unsuitable pH 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 negate 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 skin more sensitive to UV rays, increasing the risk of sunburn and skin damage. Therefore, it's essential to use sunscreen daily when incorporating retinol into your routine.

Solution: Always apply sunscreen with at least SPF 30 in the morning and avoid prolonged sun exposure.

Tips for using retinol correctly

• Introduce it gradually : Start with an application twice a week before increasing the frequency depending on your skin's tolerance.

• Moisturize your skin : Use a moisturizer to minimize the side effects of retinol.

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

• Consult a dermatologist : If in doubt or if irritation persists, seek professional advice.

Conclusion

Retinol is an effective ingredient for fighting skin aging and skin problems, but it must be used with caution. Certain combinations can reduce its effectiveness or cause adverse reactions. By adopting a proper routine and avoiding risky combinations, you can fully benefit from retinol's benefits without compromising your skin's health.