How to Make Thin Hair Thicker

Last updated January 08, 2026

Limp, lifeless, lackluster, style-challenged… sound familiar? If you have thin or fine hair, these are among your everyday struggles. You seem to be on an endless quest for the best tips on how to get thicker hair while dreaming of bodacious bouncy locks that never fall flat. The great news is you can achieve fullness and volume with a multipronged approach. It may take adopting some new habits and switching out your current hair care products, but the results are well worth it! Just follow this complete guide on how to thicken hair naturally once and for all.

Is my Hair Fine or Thin?

First, let’s get the terms right: fine hair refers to the diameter of each strand (thickness), while thin hair means the amount of hair you have (density). You can have either thin or fine hair, or a combination of both. For the purposes of this article, we’ll use them interchangeably because our techniques and products can be effective for both.

How to get Thicker Hair with new Habits

Eat a Hair-Thickening Diet

A relatively easy way to continually boost hair growth is to eat a diet packed with hair-nourishing foods that are rich in fatty acids, protein, vitamins A, B, C and E and biotin. Think avocado, salmon, whole eggs, beans, leafy greens, carrots, nuts, and seeds. They contain nutrients that your hair needs to replenish and renew.

Turn down the Heat for less Breakage

Fine hair is delicate and more prone to breakage. So, if you really want to know how to thicken fine hair, stop weakening it with hot water when washing and hot tools when styling. If you must use a blow-dryer, wait until your hair is about 70% dry and apply a heat protectant like the Flat Iron Perfector Heat Protectant Spray. Set the dryer on low and point it away from your scalp. Get more deets in our caring for fine hair tutorial.

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Garnier Fructis

Flat Iron Perfector Heat Protectant Spray

Brush the Right Way

Another tip on how to make thin hair thicker has to do with your brushing technique. Avoid over-brushing, which can saturate your lengths with too much natural oils and weigh them down. Vigorous brushing also increases strain on your tresses and risks more breakage. When detangling, always be gentle while working from the bottom up and tackle one section at a time. And don’t brush hair while at its weakest when wet.

Choose Gentle Protective Hairstyles

As tempting as a trending style may be, placing stress on your hair all day can weaken and split your strands. Elastic bands can tug at and tear the hair cuticles, so save tight and/or high ponytails and buns for special occasions. Opt instead for a low bun, loose braid or half-up half-down style.

Massage your Scalp

Not only do regular head massages feel great, they also exfoliate and increase blood flow for a healthy happy scalp. This creates the ideal conditions for strong growth and a fuller head of hair. A great time for a scalp massage is while shampooing two or three times a week. Be sure to use your fingertips instead of your nails.

How to get Thicker Hair with Hair Care Products

The product side of how to make thin hair thicker is to use volumizing hair care specially formulated for thin and fine hair. The best products for fine hair include thickening shampoo and conditioner combos plus styling products designed to add more body. But one of the most effective approaches is a complete hair filler system. Let’s explore your options.

Repair and Thicken in the Shower

Thickening shampoos and conditioners work by infusing the shaft with moisture and nutrients that boost fullness and body. Biotin-infused Fructis Grow Strong Thickening shampoo and conditioner are a power duo that offer up to 72 hours of thicker looking hair. For best results, keep the water on the cool side and only wash two or three times per week.

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Garnier Fructis

Grow Strong Thickening Shampoo

Volumize when Styling

When learning how to make thin hair thicker, don’t overlook leave-in treatments and dry shampoo. Grow Strong 10-In-1 Leave-In Treatment? A hair care and styling product in one, this cream is formulated with Fructis Grow Strong technology to fortify the hair fiber and prevent breakage.

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Garnier Fructis

Grow Strong 10-In-1 Leave-In Treatment

Use a Hair Filler System

For a more long-term solution, Garnier also developed the Hair Filler Fullness Repair System with Polypeptides for thin, weak, and fine hair. This four-step regimen reverses up to one year of damage by repairing bonds in the inner hair fiber. People with thin and fine hair notice a visible difference after using the system: inner fiber repair treatment, fullness repair shampoo and conditioner, and fullness repair thickening spray. They work best when used together.

Explore our other tutorials and guides with more volumizing tips and the best products for fine hair.

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Garnier Fructis

Hair Filler + Polypeptides Fullness Repair Shampoo

Garnier Commits to Greener Beauty

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How to Make Thin Hair Thicker