OUAI Fine Shampoo with Biotin Thickening for Thin Hair, Liquid, 10 Fl Oz
$47.20
$4.72 / fl oz
Free delivery Mon, Nov 16 – Fri, Nov 20 if you order today
OUAI Fine Shampoo is a 10 fl oz liquid shampoo that the brand describes as volumizing and thickening for fine or thin hair. Per the brand, it contains biotin, hydrolyzed keratin, and chia seed oil.
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Description
OUAI Fine Shampoo is a 10 fl oz liquid shampoo that the brand describes as volumizing and thickening for fine or thin hair. Per the brand, it contains biotin, hydrolyzed keratin, and chia seed oil. The ingredient list includes fragrance, so this product is not fragrance-free.
OUAI Fine Shampoo highlights
- Listed as a shampoo for fine or thin hair. The brand describes it as volumizing and thickening.
- Biotin is an included ingredient. Per the brand, it helps reduce breakage.
- Hydrolyzed keratin is listed. The brand says it smooths hair and adds shine.
- Chia seed oil (Salvia Hispanica Seed Oil) is listed. Per the brand, it adds body without heaviness.
- Contains fragrance. The brand names its scent Mercer Street, with notes of Italian lemon, iris, and white musk.
- The brand claims no sulfates, parabens, phthalates, or gluten.
OUAI Fine Shampoo details
| Brand | OUAI |
|---|---|
| Product type | Shampoo |
| Product line | OUAI Fine Hair Shampoo, Biotin Thickening Shampoo for Thin Hair |
| Size | 10 Fl Oz |
| Form | Liquid |
| Key ingredients | Biotin, Hydrolyzed Keratin, Salvia Hispanica Seed Oil (chia seed oil), Panthenol |
| Fragrance | Contains fragrance; Fragrance / Parfum is listed in the ingredients |
| Free from (per brand) | Sulfates, parabens, phthalates, gluten |
| Package dimensions | 14.2 x 5.9 x 5.7 cm |
| Package weight | 360 g as listed; the brand does not say if this includes packaging |
| Audience | Unisex |
How to use Fine Shampoo
- Wet your hair.
- Work the shampoo from the roots toward the ends, as the brand directs.
- Rinse thoroughly.
- The brand suggests using OUAI Fine Conditioner afterward.
Ingredients
Water/Aqua/Eau, Sodium C14-16 Olefin Sulfonate, Cocamidopropyl Betaine, Sodium Methyl Cocoyl Taurate, Peg-200 Hydrogenated Glyceryl Palmate, Cocamide Mipa, Fragrance / Parfum, Panthenol, Cocoglucosides Hydroxypropyltrimonium Chloride, Hydrolyzed Keratin, Biotin, Salvia Hispanica Seed Oil, Cetrimonium Chloride (Anti-Static Agent/Agent Antistatique), Hydroxypropyl Guar Hydroxypropyltrimonium Chloride, Glycerin, Sodium Lauroyl Glycinate, Peg-150 Distearate, Propoxytetramethyl Piperidinyl Dimethicone, Trideceth-6, C11-15 Pareth-7, Peg-7 Glyceryl Cocoate, Sodium Chloride, Polyquaternium-7, Disodium Edta, Citric Acid, Sodium Hydroxide, Tetrasodium Edta, Potassium Sorbate, Sodium Benzoate, Phenoxyethanol, Benzyl Alcohol, Acetic Acid, Sodium Acetate, Benzyl Salicylate, Limonene, Hexyl Cinnamal
Formulas can change. Check the package for the most current ingredient list.
Good to know
- For external use only.
- Avoid contact with eyes.
- Keep away from naked flame or direct heat sources, as listed on the product.
Questions about OUAI Fine Shampoo
Who is OUAI Fine Shampoo for?
The brand describes it as a volumizing and thickening shampoo for fine or thin hair.
Does OUAI Fine Shampoo contain fragrance?
Yes. Fragrance / Parfum is in the ingredient list. The brand names the scent Mercer Street, with notes of Italian lemon, iris, and white musk. It is not a fragrance-free product.
Is OUAI Fine Shampoo sulfate-free?
The brand says it is free of sulfates. No ingredient with sulfate in its name appears in the list, but Sodium C14-16 Olefin Sulfonate is listed. This page does not independently verify the brand claim.
Can it be used on color-treated hair?
The brand says it suits color-treated, keratin-treated, and chemically processed hair. That is a brand claim, and the ingredient list does not verify it.
What size is the OUAI Fine Shampoo?
The size is 10 Fl Oz.
Choosing your Fine Shampoo size
This product is one size, 10 fl oz, and one form, a liquid shampoo. The brand says the shampoo is made for fine or thin hair. If your hair is coarse or you want a fragrance-free product, check the ingredient list and the fragrance note before you buy. Think about the size against how often you wash your hair.
Shampoo basics
Shampoo is a liquid cleanser for hair and scalp. Its cleansing agents, called surfactants, help lift oil, dirt, and product buildup so rinsing can carry them away. Most people wet hair first, then work the shampoo through and rinse well. Conditioner is a separate product with its own job, and many people use the two together. How a shampoo feels on hair depends on the full formula, your hair type, and your routine. Read the ingredient list and the warnings before use.
About OUAI
OUAI is the brand behind this Fine line of hair care. The brand also names the OUAI Fine Conditioner and OUAI Thickening Spray as companion products in its usage notes.
Reading the ingredient list
Cosmetic ingredient lists generally run from the largest amount to the smallest, as described in the FDA cosmetics labeling guide. Color additives and ingredients present at one percent or less can appear in any order.
Shipping and returns
Free shipping on every order, no minimum. Orders ship within 1–2 business days, and delivery takes about 2 to 5 business days. Your OUAI Fine Shampoo can be returned within 30 days of delivery if it is unused and unopened, in its original packaging with any seals intact, and return shipping is always free. Damaged, defective or wrong items are always covered. Read our shipping policy and return policy, or call (888) 228-8264 or email hello@vanityaisle.com.
Looking for something similar? Browse all Shampoos in our Shampoo & Conditioner section, or explore the full Hair Care collection. Every order ships free.
Additional information
| Weight | 0.79 lbs |
|---|---|
| Dimensions | 5.6 × 2.5 × 2.5 in |
| Size | 10 Fl Oz |
| Hair Type | Fine, Thin |
| Form | Liquid |
| Features | Gluten-Free, Paraben-Free, Phthalate-Free, Sulfate-Free |

















