Prices in this article were checked on the REHAB. website on 3 November 2026 and can change at any time.
Most haircare routines focus on the lengths: smoothing frizz, repairing split ends and adding shine. But if your concern is hair that looks thinner than it used to, or more strands than usual in the shower drain, the place to start is the scalp. A balanced, comfortable scalp is the foundation for healthier-looking hair.
UK brand REHAB. has built a dedicated matcha range around this idea. This guide covers what each product does, how the pieces fit into a weekly routine and what the bundles cost. It is not about the brand’s Christmas sets or body care, which we have covered separately.
Explore the REHAB. Matcha Range
In this guide
Why Scalp Health Matters for Thinning Hair
Hair grows from follicles in the scalp, so a dry, flaky or congested scalp is not the best environment for it. Build-up from styling products, excess oil and dead skin can leave the scalp feeling tight or itchy, and many people find their hair looks flatter when the roots are weighed down.
It is worth being clear about what topical products can and cannot do. Shedding has many causes, including stress, hormones, diet, illness and genetics. If you notice sudden or patchy hair loss, see your GP or a dermatologist. For everyday thinning and shedding, a consistent scalp routine is a sensible, low-risk place to start.
Dose 0 Matcha Scalp Hair Oil: The Pre-Shampoo Step
Dose 0 is REHAB.’s pre-shampoo scalp treatment, packed with matcha, rosemary and castor oil. Like the brand’s other hair oils, it comes in single-use capsules, so you get the right amount every time without an oily bottle. REHAB. says it helps boost circulation, reduce hair loss and support healthy growth, especially for fine or thinning hair.
In a 12-week independent user trial reported by the brand, 90% agreed their scalp felt healthier and their hair appeared healthier, while 79% agreed their hairline appeared visibly fuller. Dose 0 costs £26.
The Oiling Comb (£16) is designed to gently massage the scalp and stimulate circulation before you apply Dose 0, helping the oil reach the roots. The two are sold together as the Dose 0 Matcha Hair Oil & Oiling Comb set for £33.60, down from £42.
Matcha Scalp Serum: The Leave-In Step
Where Dose 0 is used before washing, the Matcha Scalp Serum is a lightweight leave-in treatment. It is designed to deliver a burst of hydration and absorb quickly, helping to relieve dryness, flakiness and irritation. The 90ml bottle has a direct-to-scalp applicator with soft silicone tips that massage as you apply, for even coverage.
In a 6-week independent user trial, 78% agreed their scalp felt healthier and more balanced, and 73% noticed reduced hair shedding, according to REHAB. The serum costs £30.
Exfoliation and Tools
Product build-up is one of the most common reasons a scalp feels congested. REHAB. offers two ways to deal with it:
- Scalp Massaging Brush, £24: a plastic-free brush designed to remove product build-up and exfoliate the scalp in the shower.
- Retreat Scalp & Body Scrub, £22: pre-dosed balls combining sugar and sea salt crystals with coconut oil, shea butter and hyaluronic acid. On the scalp it helps clear excess sebum and flakes.
Once a week is a sensible starting point for exfoliation. Overdoing it can irritate the scalp, which is the opposite of what you want.
Lashes and Brows Too
Thinning is not limited to the scalp. REHAB. extends the matcha range to lashes and brows with two serums at £29 each. The Matcha Lash & Brow Serum is a conditioning formula designed to support the natural growth and strength of lashes and brows. The Rescue & Revive Matcha Lash & Brow Serum adds a peptide complex, green tea and botanical extracts, with a mascara-style applicator.
A Simple Weekly Matcha Routine
- Wash days: massage the scalp with the Oiling Comb, apply a capsule of Dose 0 as a pre-shampoo treatment, then wash as normal.
- After washing: apply the Matcha Scalp Serum directly to the scalp and massage it in. It is a leave-in, so there is no need to rinse.
- Once a week: exfoliate with the Scalp Massaging Brush or the Scalp & Body Scrub.
- Daily, if you want it: a lash and brow serum as part of your evening routine.
As with any hair routine, consistency matters more than intensity. Hair grows slowly, which is why the user trials above ran for 6 and 12 weeks. Always follow the directions on the pack.
REHAB. Matcha Range Prices Compared
| Product or set | What it is | Price |
|---|---|---|
| Dose 0 Matcha Scalp Hair Oil | Pre-shampoo oil in capsules | £26 |
| Matcha Scalp Serum | Leave-in serum, 90ml | £30 |
| Dose 0 & Matcha Scalp Serum Duo | Oil and serum | £44.80 (was £56) |
| Matcha Scalp Reset Routine Collection | Dose 0, serum and scalp tools | £60.20 (was £86) |
| Dose 0 & Oiling Comb | Oil and comb | £33.60 (was £42) |
| Scalp Massaging Brush | Plastic-free exfoliating brush | £24 |
| Retreat Scalp & Body Scrub | Pre-dosed sugar and salt scrub | £22 |
| Matcha Root to Lash & Brow Duo | Scalp care plus lash and brow serum | £44 (was £55) |
Prices from rehabyourhair.com on 3 November 2026.
If you want to try the full routine, the Matcha Scalp Reset Routine Collection brings together Dose 0, the Matcha Scalp Serum and scalp tools for £60.20, a saving of £25.80 on its £86 value. The Duo is the lighter option if you already own a scalp brush.
Final Thoughts
If your hair feels thinner or you are noticing more shedding, looking after your scalp is a practical first step. REHAB.’s matcha range covers the full routine, from pre-shampoo oil and leave-in serum to exfoliation and tools, with bundles that bring the price down. Give it a consistent few weeks, keep realistic expectations and speak to a professional about sudden changes. You can browse the full range on the REHAB. website.
Theo Louse
I am Theo Louse. My skills are dedicated to the field of technology information and try to make daily lives more enjoyable. With more than 12 years of experience with BM, we are particularly famous for 100% self-developed ideas. Over these years, we have worked to make everyday life more convenient for the fast-paced world we live in.