Can I use these products together?
Add the products you use, morning and night. The checker finds actives that clash in the same session, products that double up on the same active, and tells you how to split them.
Runs entirely in your browser · nothing you enter is sent anywhere or saved
How the check works
Every pair of products you use in the same session is compared ingredient by ingredient. A pair is flagged when Skinzy's ingredient database or its routine rules say the two shouldn't be layered: retinoids with AHAs, BHAs or benzoyl peroxide; AHAs with benzoyl peroxide or vitamin C; vitamin C with kojic acid. These are the same rules Skinzy's routine builder follows.
Ingredients inside a single product are not compared with each other: a formulator can stabilise a combination that you shouldn't layer yourself. Paste one product into the ingredient checker to see what's in it.
Fewer products, fewer clashes
Every extra active is another chance for two to clash. Most routines need a cleanser, a moisturiser, sunscreen in the morning and one or two actives chosen for what your skin actually shows. The compatibility chart shows which of the most popular actives can share a session.
Questions People Ask
How do I know if my skincare products can be used together?
Add each product with the time you use it (morning, night or both) and paste its ingredient list, or just type its key actives. The checker compares every pair of products used in the same session and flags actives that should not be layered, with the reason and a fix.
Can I use retinol and an AHA like glycolic acid in the same routine?
Not in the same session. Both speed up skin turnover, and together they irritate far more than either alone. Use them on alternate nights, or keep the acid in the morning and the retinoid at night. The checker treats a split like that as fine.
Why does the checker say a conflict is fine when it is morning versus night?
Most ingredient conflicts are about layering in one session. Using one active in the morning and the other at night is the standard way to keep both in a routine, so a split across AM and PM is reported as already handled.
Where do the conflict rules come from?
From the same ingredient database and class rules Skinzy’s own routine builder uses to decide what goes into a routine. The checker never adds a rule of its own, and a pair with no written explanation is shown as a caution rather than a firm rule.