THIKK Hair Thickening Fibres

Instantly Fuller, Natural-Looking Hair

100% Natural Keratin & Biotin-Infused Fibres
Premium hair-thickening fibres made from natural keratin protein - the same protein found in your own hair. Instantly add volume and fullness to thinning or fine hair. Added biotin designed to support the look of fuller, thicker hair.

Most customers switch to 30g on their second order - it lasts twice as long, and great value per gram

Undetectable, Natural Finish
Available in 9 shades, our colour fibres blend seamlessly with your natural hair for a look that’s virtually invisible, even up close.

Quick & Easy Application
The precision applicator bottle makes targeting thinning areas effortless. Shake on, blend lightly, and enjoy thicker-looking hair in seconds.

All-Day Confidence
Static-charged keratin fibres bond securely to your existing hair, staying in place through your day until you wash them out.

Unisex & Versatile
Suitable for men and women, and for all hair types. Ideal for boosting overall density or filling in specific thinning spots.

Find Your Perfect Shade & Size

Choose from 3 convenient sizes to suit your needs:

5g Mini – Perfect for testing shades, travel, or quick touch-ups. Lasts a few days on fine hair.

15g – Ideal for lighter or every-other-day use. Would last 4 weeks max with light to medium every day use (estimation from experience). 

30g – Best value. Lasts up to 8 weeks with daily use on fine hair. If hair is super fine this would likely last 6 weeks. 

💡 Tip:  You get 3 x the amount of a mini for less than double the cost when you buy a 15g or 30g for THIKK daily use. Save 25% if you subscribe to monthly delivery a great saving! 25% is a limited offer so subscribe now for long term savings!

FREE delivery when you spend over £25 on THIKK products!