10 bestHair Serumsof January 2026
112M consumers helped this year.
21% off
1

Botanic Hearth Argan Hair Oil for Adult Hydration, Nourishing, Strengthening, Curly, Frizzy, Dry, Damaged Hair, Non-GMO Verified, 4 fl oz, 1 Count
Botanic Hearth

9.8
10% off
2

Kérastase Nutritive, 8H Magic Night Serum, Nourishing Hair Serum with Niacinamide, Overnight Leave-In Treatment for Dry Hair, Lightweight and Non-Greasy, 90 ml
KERASTASE

9.6
10% off
3

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

9.4
4

L'Oreal Paris Dream lengths Sleek Frizz Eraser Serum with Keratin and Castor Oil, 100 Milliliters
L’Oréal Paris

9.1
5% off
5

Garnier Fructis Sleek & Shine Anti-Frizz Serum, For Frizzy, Dry Hair, Instant Sleek, with Argan Oil, 150 mL
Garnier

8.8
OtherUp to 5% off
5% off
6

Moroccanoil Treatment Hair Oil, 0.85 oz
Moroccanoil

8.6
7

Olaplex No. 7 Bond Oil, 30 ml.
Olaplex

8.3
20% off
8

L'Oreal Professionnel Hair Serum, Serioxyl Advanced Serum, Thickening Serum Oil, For All Scalp Types, Scalp Relief,For Hair In Need of Volume and Texture, Serie Expert,Professional, 90 ML
L'OREAL PROFESSIONNEL PARIS

8.0
5% off
9

Nioxin Ultimate Power Serum, Leave-In Hair Treatment with Caffeine, Lauric Acid, Niacinamide And Sandalore, Prevent Hair Damage, 2.3 oz
Nioxin

7.7
20% off
10

L’Oréal Professionnel 10-in-1 Leave-in Oil for Dry And Damaged Hair, With Protein. Gold Quinoa and Wheat Germ Oil, Nourishes, Resurfaces and Repairs, Serie Expert Absolut Repair, 90 ml
L'OREAL PROFESSIONNEL PARIS

7.4
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