Thinning Hair, Honest Shelf: The Best Hair Growth Products to Start With

Thinning Hair, Honest Shelf: The Best Hair Growth Products to Start With

A calm, realistic look at the best hair growth products people reach for: scalp serums made for thinning hair, the supplements on the shelf, and thickening shampoos and sprays that make hair look fuller. It covers what each kind is for and where a doctor should come first.

Before I buy anything, I like to remember how slow hair is. The Cleveland Clinic describes the scalp hair cycle in three phases, and the first, the anagen growing phase, can last anywhere from two to eight years. According to the American Academy of Dermatology Association, average hair lengthens about half an inch a month, or 6 inches a year. Nothing on a shelf is going to rush that, so when I talk about the best hair growth products I mean the ones that are honest about being made for thinning hair, and that make it look thicker and fuller while you are patient.

Scalp serums are where I begin, because the scalp is where hair starts. Vegamour's GRO Hair Serum is made for thinning hair, and it is the one I reach for when I want a routine with a clear purpose. The Ordinary's Multi-Peptide Serum for Hair Density is aimed at thicker, fuller looking hair, and it has that no-nonsense, lab-bench feel I like. Nécessaire's The Scalp Serum uses 5% Capixyl and is made for thicker, fuller, healthier hair.

Caudalie's Hair Density Serum is made for all types of hair thinning and has soothing peptides, so it is the gentlest of the group. OUAI's Hydrating Scalp Serum is the friendliest, made for healthy, fuller looking hair. Kérastase's Genesis Strengthening Scalp and Hair Serum is the polished, salon-shelf choice.

I part my hair in sections and apply to the scalp itself, not the lengths, then press it in with my fingertips for a minute. Consistency is the whole game.

Collage of scalp serums, hair supplements, thickening shampoos and a volume spray and a mood photo of a scalp massager working along a center part.
Scalp serums, hair supplements and thickening shampoos for hair that looks thinner than it used to.

Supplements, read the label first

Supplements are where I get most cautious, so I will keep this simple. I only describe them by what the label says, and I never assume a gummy can do a job it does not name. Cleveland Clinic lists vitamins or supplements as an option when thinning is linked to a vitamin deficiency, and it notes that the right treatment depends on the cause. That is the point: find out the cause first.

The shelf is friendly and colorful. SugarbearPro's Hair vitamins come as a five week supply, and Nature's Bounty's Optimal Solutions Hair, Skin and Nails Gummies contain biotin, as the name says. OLLY's Undeniable Beauty Multivitamin Gummies for Hair Skin and Nails list biotin, keratin and vitamins C and E, in a grapefruit flavor that tastes like candy. MaryRuth's Liquid Morning Vegan Multivitamin is a peach mango liquid for people who dislike swallowing anything, and Viviscal's Women's supplement is the one whose label speaks directly to hair.

I like gummies for the habit, since I will actually take something that tastes good, and I like the liquid for mornings when I skip breakfast. Read the serving size and the ingredient list, and do not double up on multivitamins without checking with someone who knows your health.

Anyone with ongoing shedding should see a doctor or dermatologist before buying any supplement at all. That appointment is worth more than a whole shelf of bottles, and it is the fastest route to learning what is going on.

Shampoos and sprays for body today

The hair cycle also has a resting phase. Cleveland Clinic says the telogen phase takes about two to four months, after which the hair falls out. So some shedding is part of the cycle, and I try not to panic over the drain. What I can do today is make what is on my head look and feel fuller, and that is what this shelf is for.

BondiBoost's Hair Thickening Therapy Volumizing Shampoo and Bumble and bumble's Thickening Volume Shampoo both do the obvious thing, lifting and plumping strands at the roots. Caudalie's Hair Volume Shampoo for Hair Thickening and Density is the one I would try for an everyday wash. amika's Big Hit Volumizing Shampoo is the bigger-hair option for people who like body after a blowout. Olaplex's No.4 Fine Bond Maintenance Volumizing and Strengthening shampoo is the one to look at if your hair is fine and you want volume plus a strengthening angle.

OUAI's Thickening and Volume Spray is made for flat, thinning hair. I spray it on damp roots, blow dry upside down, and flip it back for lift that lasts until the evening.

What I would skip: heavy conditioner on the roots, tight ponytails every single day, and any shampoo that leaves a waxy film, since all of them weigh thin hair down and make it look flatter. Keep richer products to the mid-lengths and ends, and rinse thoroughly. If the scalp is itchy, sore or patchy, that is a question for a doctor, not for a shampoo bottle.

How I would pace it

Here is how I would pace it. Pick one serum and use it every day for a few months, since hair changes slowly. Add a volumizing shampoo for the good-looking days in between, and keep a spray in the bag for the mornings when you need body fast. Take a photo in the same light each month, because the mirror can trick you and photos do not.

Keep the routine kind to your scalp: lukewarm water, gentle massage, no scratching. Be patient with every product on this page, and stop anything that stings.

Supplements come last, and only after someone has looked at your health. If shedding is heavy, sudden or ongoing, please book a visit with a doctor or dermatologist early. The AAD lists topical minoxidil, sold without a prescription, among the medications approved by the FDA for hair loss in men, which is another reason a professional conversation is a smart first step. Everything else here is support: thicker-looking, fuller-looking, and a scalp that feels looked after.