Does Biotin Help to Fight Hair Loss? I've Tested Dozens of Biotin Vitamins and Gummies. - Here Are 5 That Actually Work

Most hair vitamins weren't designed for women who blow-dry, flat iron, curl daily, or color every 6-8 weeks.

They fall short in three big ways:

  • They're missing key ingredients. A little biotin won't rebuild keratin that's been broken down by high heat or chemical processing.

  • The dose is too low. Heat and color destroy hair protein. One-size-fits-all formulas simply don't provide enough support.

  • They're poorly absorbed. If your body can't use the vitamins, they just pass right through you and become very expensive pee!

The problem is, a single pass of a flat iron can damage up to 85% of your hair's natural protein. And if you're styling multiple times a week, that damage adds up fast.… But most hair vitamins simply aren’t equipped to tackle this level of protein loss.

But how could you possibly know that? You're just trying to look polished and put together. You shouldn't have to be a Certified Scalp Specialist to buy hair vitamins!

Luckily, I AM a Certified Scalp Specialist. I've helped countless women rebuild their hair after heat and color damage. That's why I tested dozens of hair vitamins specifically for heat and color damage.

I looked at formulation strength, absorption, and ingredients that rebuild keratin and counteract oxidative stress.

Out of all the vitamins I tested, only a handful made a real, visible difference.

If you're tired of throwing money at products that do nothing, this list is for you.

Let's start with my #1 pick – the only one that rebuilds keratin destroyed by heat and chemicals...


These vitamin gummies stood out immediately in my testing. Clients who heat-style or color their hair consistently reported fuller, healthier-looking hair…

And others noticed it too!

WEEM is vegan, plant-based, and gluten-free, which makes it easy to tolerate for long-term use.

What sets it apart is its targeted biotin blend. As hair is damaged by heat, color, and aging, the scalp produces less of the protein needed to keep strands strong. 
WEEM earned my #1 spot because it’s designed to support keratin rebuilding from within. It delivers 5,000 mcg of biotin – the dose I recommend for women dealing with styling damage and age-related hair thinning.

Thanks to its high-quality, synthetic-free formula, results appeared in as little as 14 days with daily use. That’s faster than any other hair vitamin I tested!

Nutrafol may cost an arm and a leg at $88, but if you have a dry scalp, then this potent, fatty acid-packed formula could make a real difference.

It's packed with vitamins and antioxidants that work together to rejuvenate your scalp. The peptides speed up collagen production, which strengthens hair from the inside out. This helps boost growth, improve elasticity, and prevent long-term thinning, which is especially important for heat and color-damaged hair.

It comes in at #2 instead of #1 because we saw the same results as WEEM, but it’s nearly 4x the price. If you are also looking for a vegan, plant based vitamins or have fish allergies, Nutrafol is not for you.

This hard-working vitamin is pricey, but is highly effective at restoring patches of bald spots. This vitamin contains iron, a crucial mineral known for its role in promoting healthy hair growth by aiding in the transportation of oxygen to hair follicles.

Additionally, it incorporates collagen, which supports hair structure and elasticity, contributing to overall hair health.

We felt that this vitamin, while it does work, it did take longer to work compared to some of the others, and hence why it takes my #3 spot. Again, it contains shark and fish ingredients so I don’t recommend it to those who are vegan or have allergies.

Most are familiar with Nature’s Bounty. This trusted brand contains gentle ingredients that are better for a sensitive scalp, at a reasonable price. It also contains vitamin B12 and vitamin D to stimulate growth and promote healthy hair.

This made our list because of the price tag, however, we did not see the same results as WEEM. But it could still be worth trying if you want to give it a shot.

Mary Ruth’s is a trusted vitamin brand known for its high-quality vitamins, and their biotin gummies are no exception. Made up of Biotin, Vitamin B, Zinc, and additionally, Fo-Ti extract, which is a traditional Chinese herb believed to promote hair growth. 

While these vitamins do work, I saw smaller improvements compared to the others on this list, likely due to the lower 2500 mcg biotin dose per serving. That's why Mary Ruth's takes the #5 spot.