Our Favorite Hair Thickening Products That Aren’t Shampoo or Conditioner

March 07, 2023
Alanna Martine Kilkeary
By: Alanna Martine Kilkeary | Makeup.com by L'Oréal
Garnier Fructis Grow Strong Thickening 10-in-1 Leave-In Spray and Kerastase Spray De Force Epaississant Thickening Spray on a green background

If you have thin hair and want it to look fuller, in addition to feeling stronger and healthier, a thickening shampoo or conditioner might be for you. But if you’re a beauty obsessee, you may already have hair-care products you love. If you don’t want to part with your beloved shampoo (seriously, we get it), we recommend incorporating a hair thickening product after you wash.


Here, we’re sharing the very best hair thickening  products that can help make your hair appear fuller and more voluminous all while keeping your wash day regimen the same. 

The Best Hair Thickening Products

Garnier Fructis Grow Strong Thickening 10-in-1 Leave-In Spray

Add major volume and strength to your hair with this 10-in-1 leave in. It touts 72 hours of voluminous hair and contains vitamin C to help protect your strands from free radicals and biotin to help promote growth. We love that this one acts as a heat protectant, too!

Garnier Fructis Grow Strong Thickening 10-in-1 Leave-In Spray

Matrix Total Results High Amplify Wonder Boost Root Lifter

Give your hair a boost with this root-lifting option. It helps promote fullness, volume and has flexible hold. Use it post-wash on damp or dry hair and then blow-dry for best results.

Matrix Total Results High Amplify Wonder Boost Root Lifter

Kerastase Spray De Force Epaississant Thickening Spray

Volumize weak hair with this spray that promises 25% more thickness after one application. It contains creatine and ginger root to help strengthen hair fibers and instantly adds lift and dimension to your roots.

Kerastase Spray De Force Epaississant Thickening Spray

Amika 3D Leave-In Hair Thickening Treatment

Infused with hydrolyzed rice, vegetable proteins and proprietary redensyl, this formula, which is suitable for all hair types, encourages growth and major volume. When your hair is damp, spray it onto your scalp to help your hair appear thicker.

Amika 3D Leave-In Hair Thickening Treatment

Kristin Ess Instant Thickening Spray

Spray this formula on from root to tip for instant fullness, shine and healthier-looking hair. It has a mousse consistency that seamlessly melts into your hair upon contact and will provide a long-lasting, volumized finish.

Kristin Ess Instant Thickening Spray

BondiBoost Miracle Mask for Thinning Hair

Combat thinning hair with this hair mask that will help volumize your strands and get them looking healthy, full and strong. This mask has a combination of argan oil, procapil and redensyl, which work together to help condition and nourish the hair cuticle from root to tip.

BondiBoost Miracle Mask for Thinning Hair

The INKEY List Caffeine Stimulating Scalp Treatment

Stimulate healthy growth with this scalp treatment that’s suitable for all hair types. It works to visibly thicken the appearance of thinning hair, and helps address hair fallout, too.

The INKEY List Caffeine Stimulating Scalp Treatment
Design: Juliana Campisi

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