Effaclar Duo Dual Action Acne Spot Treatment

Tracked ingredients

Key actives from our research database. Click any to read the full evidence dossier.

Layering conflicts

Ingredients in this product that can react with common actives. Avoid stacking unless noted.

• Vitamin Cmedium

  Benzoyl peroxide breaks down vitamin C, making both less effective. Use one in the morning and the other at night.

• Retinolmedium

  Benzoyl peroxide can break down retinol. Use one in the morning and the other at night, or pick a stabilized formula made to combine them.

• Tretinoinmedium

  Benzoyl peroxide breaks down tretinoin unless they're in a stabilized formula made to combine them. Use one in the morning and the other at night.