How to Exfoliate Scalp: Why the Scalp Comes Before the Hair

Dear Friends, in 1957 a hairdresser from a village in Provence, René Furterer, gave a name to something we still talk about: etheirology, his philosophy of scalp health and hair beauty. He put it to work in his first hair spa in Paris, with a three-step method called Prepare, Wash, Treat, and the prepare step was a scalp treatment before any shampoo touched the hair. (I love that the idea is older than most of our bathroom shelves.) I also put together Hair Oil for the Ends and for the Scalp.

 

So here is the lesson for how to exfoliate scalp: do it before you wash, gently, and not very often. Healthline says to avoid exfoliating more than once or twice a week, and that coarse salts, nuts and seeds can create micro-tears, so a fine, soft scrub beats a gritty one. If you wash often, once every few weeks may be plenty. Below you will find the modern options, from physical scrubs to acids, brushes, clarifying shampoos and the serums that follow. If you want to keep going, Hair Care Essentials: Scalp Oil, Growth Serum and More is the one I would read next.

 

Physical scrubs first, because they are the easiest to understand. Picture her on a Sunday evening in October, hair damp, a tube in one hand and nothing else on the calendar. The Oribe Serene Scalp scrub pairs soft polymer beads with alpha hydroxy acids, so it is gentle but not just grit. Moroccanoil goes with argan shell powder, and Christophe Robin keeps it simple with sea salt. For something that also does your arms and shoulders, the OUAI St. Barts sugar scrub works on scalp and body. Bondi Boost, Paul Mitchell (tea tree, foaming) and Phyto (grainy salt crystals from French salt mines) are the saltier options, and the René Furterer Head Spa scrub adds activated plant charcoal, a nice nod to where this started.

 

My tip: massage with the pads of your fingers, never your nails, on a dry or just-damp scalp, then rinse well before you shampoo.

Mayo Clinic lists salicylic acid among the nonprescription active ingredients in dandruff shampoos, so it is a familiar name long before it shows up in a scalp bottle. That is the idea behind this group: no grit, just an acid that does the loosening for you.

 

The Act+Acre Salicylic Acid Scalp Exfoliator is a dropper bottle with 0.15% salicylic acid, a BHA. Its founder, the Irish hairstylist Helen Reavey, spent 18 months with a team of 31 PhDs developing the brand's Cold Processed method, which is a lot of lab time for one dropper. Alpha-H uses salicylic acid with Australian desert lime as a pre-wash treatment, and Briogeo's Scalp Revival spray is the one I would hold for dry shampoo buildup. The Vichy Dercos serum comes in a green glass bottle with a long nozzle for between-wash use, and the Philip Kingsley Flaky Scalp Mask pairs salicylic acid with piroctone olamine and green tea.

 

If you lean toward AHAs, Bondi Boost's HG rinse uses lactic acid and aloe, Biolage's Scalp Sync Purifying Concentrate uses glycolic acid with fermented tea, and the Philip Kingsley Overnight Scalp Barrier Serum goes on and stays on, with aloe and AHAs. Patch test on a small area behind the ear and read the frequency on the label.

 

What I would skip: any exfoliant while your scalp has open cuts, or if you have seborrheic dermatitis or psoriasis. Healthline says those conditions make the scalp more sensitive to exfoliation, so that is a conversation for a doctor.

Tangle Teezer started with a hair colorist, Shaun Pulfrey, who set out in 2003 to solve tangles and ended up with the world's first detangling hairbrush. Its Scalp Exfoliator & Massager brings the same soft-toothed thinking to the shower, with two tiers of silicone teeth.

 

A brush is the gentlest way in, because you control the pressure with your hand. The Rizos Curls brush in pink has flexible nubs, the Jupiter scalp brush in black is a 3-in-1 that detangles and exfoliates, and the Conair Basik Edition uses three shapes of soft-tipped bristles. Briogeo's Scalp Revival massager is hand-held silicone, and the page says it works on a dry scalp or with shampoo. The Virtue Flourish Manta is flexible and shaped to sit in your palm. For a slower evening ritual, Act+Acre's Scalp Gua Sha is cut from natural jade, and Skin Gym's LED brush combines red and blue light with gentle vibration.

 

Before you buy, press the tips against the inside of your wrist. They should feel soft and springy, never pointed, and the handle or strap should let you keep your fingers relaxed.

 

What I would skip: pressing harder to feel it working. The American Academy of Dermatology notes that rubbing, scrubbing and scratching tend to make scalp psoriasis worse, and slow circles are plenty for everyone else too.

Healthline says heavy product users can exfoliate about weekly, while people who wash often may only need it once every few weeks. A clarifying shampoo is the low-effort way to build that into a wash day, because the scrubbing and the cleansing happen in one step.

 

Oribe's The Cleanse is a mousse-to-lather formula with volcanic ash, and Act+Acre's Clarifying Hard Water shampoo is made for mineral buildup. The goop beauty Himalayan Salt Scalp Scrub Shampoo is whipped and pink, with moringa and rosehip oils. Briogeo's charcoal and coconut oil scrub shampoo is sulfate-free for dry, itchy scalps, and its page says it is clinically shown to increase scalp hydration up to 120%. Briogeo itself began in 2013 with four products, formulated by founder Nancy Twine on nights and weekends after her day job. Cécred, LolaVie and Rahua all use gentle exfoliants in a shampoo, with fermented purple willow bark, activated charcoal and star anise with fruit enzymes in turn, and Wellbel's detox gel is color-safe.

 

A practical test: after rinsing, your hair should feel clean and light, not squeaky or tight. If it squeaks, move to a gentler option next time.

 

What I would skip: a scrub shampoo on the same day as a physical scrub or an acid. One exfoliating step per wash is enough.

Act+Acre was launched at the end of 2018 by Helen Reavey and her husband Colm, and its serums rely on a patented Cold Processed method that skips heat, which the brand says can lessen the potency of nutrients in seed oils. Whatever you think of the method, the point stands: scalp care belongs in the skincare mindset.

 

Some of these go on before the wash. Briogeo's Scalp Revival Rosemary oil is a pre-wash or overnight treatment, JVN's Complete Pre-Wash Scalp Oil uses rosemary extract, and amika's Reset Pink Charcoal is an oil-to-foam that breaks down buildup. René Furterer's Head Spa Complexe 5 is the pre-shampoo concentrate with orange and lavender essential oils, the same name that was the prepare step of his 1957 spa method.

 

Others stay on after. Act+Acre's Daily Hydro serum has hyaluronic acid for a dry scalp, its Microbiome Cooling serum is for itch and loose flakes, and OUAI's Hydrating Scalp Serum is skincare-inspired. Augustinus Bader's Scalp Treatment is the one for thinning, weak hair, and its page says it helps reduce shedding. I went deeper on a related idea in Greasy Hair by Noon: The Dry Shampoos and Scalp Fixes That Actually Help.

 

Apply a few drops to the part lines, not the whole head, and let it settle before you style.

This is what I would do, in this order. Pick one exfoliating step, a scrub or an acid, and keep it to once a week at most. Use a brush in the shower on the other wash days if you like the feeling, with a light hand. Choose a clarifying shampoo only when your hair feels heavy, and finish with a serum or oil.

 

René Furterer wrote the order down in 1957: prepare, wash, treat. It still works on a cold October night with the heat on and a towel on your head.

 

With love, and soft hands,