Ingredient comparator.
Paste any product's INCI. See how it compares to The Constant, on efficacy, irritation, delivery, and evidence.
Bring any label. We will read it with you.
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What the Comparator will compare
01Efficacy
Cited endpoints, not vibes.
02Irritation
Reported tolerability profile.
03Delivery
Whether the active gets where it needs to go.
04Evidence
Study type, sample, duration, source.