Best Supplements for Hair Growth in the UK (Science-Backed Guide 2025)

Introduction

Hair thinning and hair loss affect millions across the UK — and it’s not just about appearance, but confidence and wellbeing. While genetics play a role, nutrition is often the missing link.

At CleanSupplementsUK, we’ve seen real-life results from customers reversing hair loss and restoring growth with the right science-backed supplements. Unlike high-street brands full of fillers and chalk dust, our formulas are pure, filler-free, and effective.

Here are the best supplements for hair growth in the UK for 2025, backed by research and trusted by our community.

1. Collagen — The Hair Strength Protein

Collagen is the most abundant protein in your body and vital for hair structure. Supplementing with Type I hydrolysed collagen:

Stimulates hair follicle cells
Improves scalp blood flow
Strengthens brittle hair

👉 Clinical studies show collagen peptides support faster hair regrowth and reduced thinning.

✅ Try our Marine Collagen Hydrolysed Type 1 — sustainably sourced, filler-free, and trusted by customers who’ve seen visible results.

2. Biotin (Vitamin B7) — The Hair Vitamin

Known as the “hair and beauty vitamin,” biotin supports keratin production, the protein that makes up your hair.

Deficiency can lead to thinning, brittle hair and even hair loss.
Supplementing improves hair strength, shine, and growth rate.

✅ See our Biotin supplement — pure and filler-free, designed for maximum absorption.

3. Omega-3 — Nourishment From the Inside Out

Omega-3 fatty acids nourish hair follicles, reduce scalp inflammation, and promote thicker, healthier hair.

EPA and DHA improve blood flow to the scalp.
Omega-3 deficiency is linked with dry, brittle, and thinning hair.

✅ Our Omega-3 Algae Oil is a clean, vegan alternative to fish oil — zero toxins, 100% pure.

4. Zinc + Copper — The Hair Mineral Duo

Mineral imbalances are often overlooked in hair loss.

Zinc regulates oil glands and prevents hair follicle shrinkage.
Copper supports pigmentation and prevents premature greying.

✅ Explore our Zinc + Copper — balanced and filler-free, for healthier hair from root to tip.

5. Vitamin D3 + K2 — The Hidden Hair Factor

Low vitamin D is strongly linked to hair loss (especially alopecia). It plays a role in stimulating hair follicles and regulating immune balance.

✅ Support your levels with Vitamin D3 + K2 — vegan-friendly, British-made, no nasties.

🕸 Cross-Link to Previous Blog

As we explained in our No Nasties Guide, most hair growth supplements on the high street are bulked out with cheap fillers. That’s why so many people waste money without results. At CleanSupplementsUK, every capsule is 100% pure — so you see the difference in your hair, skin, and nails.

Conclusion

If you’re struggling with hair loss or thinning, don’t waste money on harsh shampoos or filler-packed multivitamins. The best supplements for hair growth in the UK are: