Hair Serums is an editorial site for people choosing leave-in and scalp serums by concern and hair type. We publish practical guides, ingredient explainers, and catalog comparisons for the U.S. Amazon market.
We are not a clinic, pharmacy, or brand storefront. Cosmetic serums can improve routine outcomes; they do not diagnose or treat medical hair loss. Persistent or sudden shedding deserves a qualified professional.
Our reviewers
Formulation reviewer
Maya Chen
Ingredients, texture, and formula fit
Maya reviews serum formulas for ingredient role, texture weight, and hair-type fit. She focuses on what a label can realistically deliver — not marketing claims.
Hairstylist editor
Jordan Wells
Application, routines, and product feel
Jordan evaluates serums the way a chair would: dose, placement, humidity behavior, and whether a formula survives real wash-day routines across textures.
How we choose products
Recommendations start with fit: concern, hair type, texture weight, and whether the active role matches the claim. We look at ingredient position, finish, review-pattern stability, and obvious fail cases (flat roots, buildup, scalp irritation). Brand fame alone never ranks a product to the top.
Details live in our editorial standards and the methodology section on Best Hair Serums.
Affiliate relationships
We participate in the Amazon Associates program. If you buy through links on this site, we may earn a commission at no extra cost to you. Affiliate status does not buy a higher ranking — products still have to clear the fit criteria above.