About TIER
A decision engine for skincare—not another shelf.
TIER starts with what a person wants to improve, then ranks active ingredients by evidence and real-world tradeoffs.
What we are
Goal-first, evidence-ranked, clear about uncertainty, and willing to say that another product may not be necessary.
What we are not
TIER is not a diagnosis tool, clean-beauty scanner, retailer, universal safety score, or replacement for professional care.
Current status
Current evaluations are an editorial preview. Complete source lists and clinical review have not yet been published, so uncertainty remains visible and claims stay conservative.