Retinols and AHAs should not be used together as they can cause skin irritation and sensitivity. You should use them on alternate days to avoid over exfoliation.
Benzoyl Peroxide and Tretinoin can deactivate each other and reduce the effectiveness. It can cause dryness and irritation.
Retinol and Vitamin C should not be combined in the skincare routine. They have different pH levels and using them together can reduce their effectiveness.
Vitamin C and AHAs if used together, can disrupt the skin's balance. You should avoid using them together to avoid skin irritation.
Using Glycolic Acid and Salicylic Acid together can lead to over exfoliation. It can lead to redness and skin sensitivity.
Benzoyl Peroxide can oxidise Vitamin C, making it less potent. It can cause irritation and reduce the effectiveness.
Salicylic Acid and Tretinoin if used together can cause excessive dryness. You should avoid using this combination as it can damage the skin's protective layer and cause irritation.
Avoid combining Squalene with Hydrogen Peroxide in your skincare routine. It has oxidative reaction that can cause irritation and compromise the skin barrier.
Avoid using glycolic acid and vitamin C together, as combining them can irritate the skin, disrupt pH balance, and reduce their effectiveness.