Scalp health 101: the London guide everyone skips
The single most overlooked variable in hair health is the scalp itself. Treat it like skin — not like a surface to shampoo — and the conversation changes entirely.
Maya Levin
IAT Trichologist · Notting Hill
In short
- The scalp is skin and has its own microbiome — disrupting it disrupts hair.
- Sulphate-free, pH 4.5–5.5 cleansers protect the barrier without compromising clean.
- London water is hard (270–320 ppm) — a shower filter changes everything for fine hair.
- Scalp facials are not a luxury — they are functional treatment for itch, flaking and density loss.
The single most overlooked variable in hair health is the scalp itself. A balanced scalp microbiome and a healthy barrier are prerequisites for strong follicles — and yet most hair routines ignore the scalp entirely in favour of mid-length and ends.
What a healthy scalp looks like
No persistent itching. No visible flaking. No greasiness that returns within hours of washing. No tenderness at the parting. If any of these are present, treat the scalp first — every other intervention sits downstream of barrier health.
The London water problem
London tap water averages 270–320 ppm of mineral hardness — among the hardest in Europe. Hard water deposits calcium and magnesium on the scalp and hair shaft, dulling colour, weakening the cuticle and disrupting the microbiome over time.
A £40 shower filter solves 80% of this problem. For colour-treated or fine hair in central London, it is the single highest-ROI hair purchase you can make.
Scalp facials: what they actually do
A clinical scalp facial combines exfoliation (chemical or mechanical), targeted serums (caffeine, peptides, niacinamide) and LED or microcurrent therapy. The goal is barrier restoration and follicular environment optimisation — not just a relaxing wash.
In London, expect £85–£180 per treatment. A 4-session course over 6 weeks is the standard protocol for visible density and texture improvement.
Frequently asked
Common questions
How often should I exfoliate my scalp?+
Once weekly for normal scalps; twice weekly for oily or product-heavy routines. Over-exfoliation disrupts the barrier and makes things worse.
Are scalp facials worth it in London?+
Yes, when chosen for a specific problem: persistent flaking, density loss, itch, or post-colour barrier damage. As a one-off luxury they are pleasant but unmeasured.
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