VEGAMOUR GRO+ Advanced Hair Serum, MD-Formulated

Why it's worth it

A lightweight daily serum built around plant actives instead of minoxidil. It's the easiest one here to actually stick with, which matters more than anything when you need months of consistency, and it works for people who can't or won't use a drug treatment.

It's the serum you'll still be using in month four. That sounds like faint praise, but adherence is the whole game with thinning hair. This one absorbs fast, doesn't leave your roots oily, and takes about ten seconds at night. Owners who like it describe using it before bed without thinking about it. Compare that to a routine that involves rinsing, waiting or restyling, and you can see why people quit those.

It skips minoxidil entirely, which opens it up to people the drug shuts out. Minoxidil isn't recommended during pregnancy or breastfeeding, and some people simply react badly to it. VEGAMOUR is vegan, cruelty-free and free of hormones, so it's a reasonable starting point if postpartum shedding is what brought you here. It's also formulated with dermatologist input, per the manufacturer, and made for both women and men.

From our review of 10 hair growth serums for thinning hair, by Sarah Wright, Editorial Associate

What we like

• +It's the serum you'll still be using in month four
• +It skips minoxidil entirely, which opens it up to people the drug shuts out
• +The reported wins are about shedding, not regrowth — and that's the right expectation
• +The GROActive+ complex is delivered in a liposomal carrier, which the brand says helps actives reach the scalp

What to know

• –A meaningful minority of owners get scalp irritation, and a few get breakouts
• –It's a one-month supply in a small bottle, and results need at least three months
• –Use too much and your hair goes flat and oily