10 bestHair Serumof July 2026
112M consumers helped this year.
1

Botanic Hearth 100% Pure Rosemary Oil For Hair Infused With Biotin 6.7 Fl oz | Hair strengthening Treatment | Nourishing & Volumizing | With Jojoba Oil & Castor Oil | Non GMO Verified
Botanic Hearth

9.7
2

Kérastase Elixir Ultime, L'Huile Original Hair Oil, Hydrating Oil Serum Creates Frizz-Free Shiny Hair, With Argan Oil, Camellia Oil & Marula Oil, For All Hair Types, 100 ml
KERASTASE

9.4
3

Moroccanoil Treatment Hair Oil, 0.85 oz
Moroccanoil

9.1
4

Hair Serum: Hair Oil, Rice Water for Hair, Rosemary Oil for Hair, Castor Oil for Hair, Hair Products for Women and Men, for Thicker, Longer and Fuller Hair, with Biotin and Caffeine
ProBliva

8.8
5

Kérastase Genesis Hair Serum, Hair Thickening Sérum, Nourishing & Fortifying Leave-In Sérum, For Weakened Hair, With Ginger Root & Edelweiss Flower, 90 ml
KERASTASE

8.5



