OUAI Fine Shampoo Refill, 946 ml

OUAI Fine Shampoo Refill is a liquid shampoo marketed for fine hair, with a volumising focus and a 946 ml refill size. Its listing names biotin, hydrolysed keratin and chia seed oil, while customer feedback reports soft, lightweight results and a fuller-looking finish for some users.

At a glance

Marketed to cleanse fine hair and add bounce and volume without a heavy feel.
Listing names biotin, hydrolysed keratin and chia seed oil, and claims they help strengthen hair, reduce frizz and tame flyaways.
Refill format supplies 946 ml of liquid shampoo.

Price

£42.56Save 24%

Reference price: ~~£56.00~~

Price checked: 14 Nov 2026

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Often bought together

OUAI Fine Hair Conditioner Refill - Volumizing Conditioner Made with Keratin, Biotin and Chia Seed Oil - Adds Softness, Bounce and Volume - Free from Parabens, Sulfates, and Phthalates - 946ml

£42.56

OUAI Detox Shampoo - Clarifying Shampoo for Build Up, Dirt, Oil, Product and Hard Water - Apple Cider Vinegar & Keratin for Clean, Refreshed Hair - Sulfate-Free Hair Care - 300ml

£21.37

Pros and cons

Pros

Large 946 ml refill format for buyers who want a larger shampoo supply.
The product is explicitly positioned for fine hair and weightless-looking volume.
Customer feedback describes softness and fuller-looking hair without a weighed-down feel.

Technical specifications

15 specifications

Identity
Brand	OUAI
Model	2342988
Package size	Refill

Product details
Form	Liquid
Hair type	Fine
Scent	fresh
Age range	Adult
Hair colour suitability	All Hair Colours
Benefits	Anti-Frizz, Strengthening, Volumizing
Material type free	Paraben Free, Sulphate Free
Special feature	Not Tested On Animals
Active ingredient listed	carbon

Volume and dimensions
Liquid volume	946 Millilitres
Item dimensions	16.8 x 7.6 x 25.1 centimetres
Number of items	1

What to know before buying

Listing details to confirm

The listing calls the product paraben-, phthalate- and sulfate-free in its title, while the structured material-free detail specifies only paraben and sulphate free. The active-ingredient field says “carbon”, which does not match the listed biotin, hydrolysed keratin and chia seed oil claims. Check the selected pack’s ingredient information if these details matter.

Who is it for?

A good fit for

People with fine hair looking for a refill-size shampoo marketed for volume and bounce.
Buyers seeking a liquid shampoo with a fresh scent and listed anti-frizz and strengthening benefits.

OUAI Fine Shampoo Refill, 946 ml · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.8 / 5 · 510 ratings

5 stars91%91%
4 stars4%4%
3 stars1%1%
2 stars1%1%
1 star3%3%

Customer feedback highlights effectiveness for fine or straight hair, fragrance, softness and a lightweight feel. Some feedback describes hair looking fuller after blow-drying, while another report says it thickens without making hair coarse. This aligns with the product’s stated aim of weightless volume, but results are personal and the listing’s ingredient details are inconsistent. The aggregate ratings are strongly favourable overall, though a smaller share is low-rated and the figures do not explain why.

Positive themes

Feedback describes softness and a lightweight feel after use.
Some customers report fuller-looking hair, including after blow-drying.
The customer summary reports positive responses to the fragrance.

Frequently asked questions

What hair type is this shampoo intended for?

The listing identifies fine hair as the intended hair type and describes the shampoo as volumising.

What is the refill size?

The listed liquid volume is 946 Millilitres.

Which ingredients does the listing highlight?

The product title and feature text name biotin, hydrolysed keratin and chia seed oil. A separate active-ingredient field says “carbon”, so the ingredient details are inconsistent.

What do customers report about the results?

Customer feedback mentions soft-feeling hair without a weighed-down feel and a fuller-looking finish for some users. These are reported experiences, not guaranteed results.