Free tool
Ingredient conflict checker
Paste the ingredient list from a product (or two). We'll show the actives we recognise, which ones fight when layered, and which ones work well together.
Detected actives
- Retinaldehydeanti-agingRetinal (retinaldehyde) is a fast-acting vitamin A form, one step from retinoic acid, for firmer-looking skin and softer fine lines.
Layer on different days
No layering conflicts between the actives we found.
Work well together
No standout pairings among the actives we found.
Also worth knowing
- Usually avoided in pregnancy and breastfeeding: Retinaldehyde.
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See how Qinci does this on every product pageBased on published ingredient lists, not the finished formula (pH, concentration and encapsulation all matter). Cosmetic guidance, not medical advice.