A 100ml white spray bottle of Hydrosil Scalp Shield Tonic, with its green and blue label and fine-mist pump, the leave-in scalp tonic for dry, itchy scalps.

Hydrosil Scalp Shield Tonic 100ml

£11.95

A woman with dark, wavy damp hair sits by a window, eyes closed, massaging her scalp with her fingertips, a bottle of Hydrosil Scalp Shield Tonic on the sill.

Hydrosil Scalp Shield Tonic dispensing a clear, lightweight liquid onto a fingertip, beside a list of its key benefits for dry, itchy and flaky scalps.

Fine droplets of clear liquid scattered across a soft white surface, evoking the fine mist and hydration of Hydrosil Scalp Shield Tonic spray.

A woman with dark, wavy hair looks at the camera, holding a bottle of Hydrosil Scalp Shield Tonic up beside her face with the green label facing forward.

Back of the Hydrosil Scalp Shield Tonic spray bottle, its green label showing directions for use, the full ingredients list, and vegan and 98% natural marks.

Hydrosil Scalp Shield Tonic 100ml

Name: Hydrosil Scalp Shield Tonic 100ml
Brand: Skin Shop
SKU: HydroSSTonic
Price: 11.95 GBP
Availability: OutOfStock

For Dry, Itchy ScalpsSoothes & HydratesSteroid-FreeFragrance-Free

£11.95

100 ml

Tax included. Shipping calculated at checkout.

Hydrosil Scalp Shield Tonic is a gentle, naturally derived leave-in scalp tonic for dry, itchy, flaky and sensitive scalps, including those associated with eczema-prone, seborrhoeic or reactive skin. It combines a patented passion fruit seed complex, a chicory root prebiotic, the active component of Australian tea tree and plant proteins to help soothe itching, hydrate the scalp, reduce flaking and support scalp barrier function to keep moisture locked in. Gentle enough for everyday use, it leaves the scalp feeling calm and comfortable, and pairs with Hydrosil Scalp Shield Shampoo. Steroid- and sulphate-free, 98% natural, vegan and dermatologically tested for sensitive skin, made in Britain.

Helps soothe itchy-feeling, sensitive scalps
Hydrates the scalp and helps keep moisture locked in
Helps reduce flaking and support scalp barrier function
Leave-in spray, steroid-free and gentle enough for everyday use

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I see a lot of patients with dry, itchy, flaky scalps who want something they can keep using between washes, not just another medicated shampoo. I recommend Hydrosil Scalp Shield Tonic because it is a leave-in made for the scalp itself: a patented passion fruit seed complex, a chicory root prebiotic and the active component of Australian tea tree to soothe itching, hydrate the scalp and support its natural barrier, while remaining gentle and steroid-free. With regular use, it helps a dry, itchy scalp feel calmer and less flaky.

Dr. Eva Melegh

Dermatologist, specialising in sensitive and reactive skin conditions

	Suitable for:	Dry, flaky and sensitive scalps, including scalps associated with eczema-prone, seborrhoeic or reactive skin. Also suited to scalps left dry, tight or uncomfortable by harsh or fragranced shampoos, to scalps that become dry and flaky in cold or centrally heated weather, to dry, flaky scalps that remain uncomfortable despite regular shampoo use, and to scalps left dry by braids, weaves and other protective styles. Suitable for men and women, and gentle enough for everyday, long-term use.
	What it does:	Helps soothe dry, sensitive scalps, hydrates the scalp and helps reduce flaking, while supporting the scalp's natural barrier and helping maintain scalp hydration. The lightweight leave-in spray absorbs without weighing hair down or leaving residue, leaving the scalp feeling comfortable throughout the day. Use daily after washing with Hydrosil Scalp Shield Shampoo, and spritz between washes whenever the scalp feels dry or uncomfortable.
	Product type:	Gentle, naturally derived leave-in scalp tonic, sprayed onto the scalp through damp hair, for dry, flaky and itchy scalps, with a patented passion fruit seed complex, a chicory root prebiotic, the active component of Australian tea tree and plant proteins.
	Ingredients:	Contains a patented passion fruit seed complex, a chicory root prebiotic, the active component of Australian tea tree and plant proteins to soothe the scalp, hydrate and reduce flaking. Steroid-free and free from sulphates (including SLS), parabens, MI and added perfume. Please note it contains wheat-, soy- and corn-derived proteins. Full ingredients list below.
	Made in:	Britain

Vegan
Animal Test-Free by PETA
Dermatologically Tested
Made in Britain

Product overview

Hydrosil Scalp Shield Tonic is a gentle, naturally derived leave-in scalp tonic for dry, itchy, flaky and sensitive scalps. Most scalp products are rinse-off, so any relief tends to stop once you have washed and dried your hair, even though a dry, sensitive scalp often feels tightest and most uncomfortable in between washes. Scalp Shield Tonic is left in, so it helps maintain scalp comfort and hydration throughout the day.

Dry, flaky and sensitive scalps can occur for a variety of reasons, including environmental factors, frequent washing and individual skin sensitivity. Environmental factors such as cold weather and centrally heated environments can contribute to scalp dryness and discomfort.

Scalp Shield Tonic is built around three naturally derived actives and a blend of plant proteins. A patented passion fruit seed complex helps support scalp comfort and contributes to a balanced scalp environment; a chicory root prebiotic helps support and strengthen the scalp's natural barrier, and the active component of Australian tea tree helps keep the scalp fresh and clean. The plant proteins from wheat, soy and corn help form a light conditioning layer on the scalp and hair. Because it is a leave-in formula rather than a rinse-off product, the ingredients remain on the scalp between washes, helping improve scalp comfort, reduce visible flaking and maintain hydration.

Scalp Shield Tonic is steroid-free and made for steady, everyday use rather than an overnight fix. With regular use, many users find the scalp feels more comfortable and less prone to visible dryness and flaking over time. The formula is deliberately light, so the spray reaches the scalp through the hair and absorbs without leaving residue or weighing hair down. The formula is fragrance-free and suitable for sensitive scalps. As with any product for sensitive skin, patch test first and discontinue use if irritation or discomfort occurs.

For best results, use after washing with Hydrosil Scalp Shield Shampoo, and pair with PSOregon Conditioner on the lengths of the hair. You can also spritz it on between washes whenever the scalp feels dry or uncomfortable, which makes it useful for scalps left dry or uncomfortable by braids, weaves and other protective styles. It sits naturally alongside the rest of the Hydrosil range, such as the Dry Eye Gel for the eyelids, Hydrobrow for dry, flaky brows, and the Turmeric Butter & Donkey Milk Salve for drier patches on the face and body.

Developed by Skin Shop, specialists in skincare for dry, sensitive and reactive skin for over 20 years, and proudly made in Britain.

How to use

After washing with Hydrosil Scalp Shield Shampoo, towel the hair so it is damp rather than dripping. Part the hair in a few places and spray the tonic directly onto the scalp across the whole head, then massage it in gently with your fingertips so it reaches the skin rather than sitting on the hair. Leave it in and style as normal, drying on a medium to low heat if you blow dry. Use once daily after washing, and spritz onto the scalp between washes whenever it feels dry or itchy. If you use a conditioner, keep it to the lengths of the hair, such as PSOregon Conditioner.

As with any product for sensitive skin, patch test before first use, and avoid contact with the eyes. If irritation or discomfort occurs, discontinue use. The formula contains wheat-, soy- and corn-derived proteins.

As part of a wider Hydrosil routine, use Scalp Shield Tonic and Scalp Shield Shampoo together for the scalp, the Dry Eye Gel on the eyelids and around the eyes, Hydrobrow on dry, flaky brows, and the Turmeric Butter & Donkey Milk Salve on drier patches across the face and body. The Hydrosil Scalp Shield Duo Pack brings the tonic and shampoo together in one routine.

Ingredients

Key actives: Botrytis Cinerea/Passiflora Edulis Fruit Extract/Piceatannol Ferment Lysate Filtrate (a patented, fermented passion fruit seed complex that helps soothe sensitive scalps and support barrier function, rich in antioxidants), Inulin (a chicory-derived prebiotic that helps support and strengthen the scalp's natural barrier and its beneficial microbiota), 4-Terpineol (the active component of Australian tea tree, which helps keep the scalp fresh and clean), Hydrolyzed Corn Protein, Hydrolyzed Soy Protein and Hydrolyzed Wheat Protein (plant proteins that form a light, conditioning layer over the scalp and hair) and Glycerin and Propanediol (humectants that help the scalp and hair hold on to moisture).

Full ingredients list: Aqua (Water), Phenoxyethanol, Cocamide DEA, Inulin, Propanediol, 4-Terpineol, Glycerin, Ethylhexylglycerin, Hydrolyzed Corn Protein, Hydrolyzed Soy Protein, Hydrolyzed Wheat Protein, Botrytis Cinerea/Passiflora Edulis Fruit Extract/Piceatannol Ferment Lysate Filtrate.

Our formulations may be updated from time to time. Please refer to the ingredient list on the product packaging for the most current and accurate information.

Featured in

Day 1:

On the first day, the tonic sprays on light and clear through damp hair, absorbs into the scalp without leaving residue or weighing hair down, and is left in as you style as normal. The fragrance-free formula feels light and comfortable on the scalp and can be used as part of your everyday scalp care routine.

Week 1:

Over the first week, used once a day after washing, many users find their scalp feeling more comfortable and refreshed. The spray is light, so parting the hair and spraying directly onto the scalp helps it reach the skin rather than the hair. Regular use helps keep the scalp hydrated and comfortable between washes.

Weeks 2-3:

With consistent use, many users notice less visible dryness and flaking, and the scalp often feels more comfortable. Used between washes as well, the tonic helps maintain scalp comfort on the days you do not wash your hair.

After 1 month:

After about a month of regular use, the scalp often feels more balanced and comfortable, with visible dryness and flaking becoming less noticeable. Many people find they reach for the tonic whenever the scalp feels dry or uncomfortable, helping maintain comfort between washes.

Long-term:

With continued regular use, the scalp tends to remain comfortable and less prone to visible dryness and flaking. Many people keep Scalp Shield Tonic as a daily leave-in product, often alongside Scalp Shield Shampoo, as a steady part of their routine.

Two whole passion fruits and one cut in half to show its golden seeds and pulp, the passion fruit behind Hydrosil's seed complex

Passion Fruit Seed Complex

A patented passion fruit seed complex, fermented to concentrate its naturally occurring antioxidants and researched for its soothing action on dry, sensitive skin. It helps calm a dry, irritated-looking scalp and support its natural barrier, helping reduce flaking and keep the scalp feeling calmer over time.

A wooden scoop spilling pieces of dried chicory root onto a pale background, the source of Hydrosil's prebiotic

Chicory Prebiotic

A skin prebiotic derived from chicory root, which helps support the scalp's natural barrier and its beneficial microbiota. By helping keep the scalp balanced and comfortable, it is part of what helps ease flaking with regular use.

A flowering tea tree sprig with white bottlebrush blooms and needle-like leaves on a clear glass dish, the tea tree in Hydrosil

Australian Tea Tree

The active component of Australian tea tree, 4-Terpineol, long valued for keeping skin clean and fresh. In the Tonic it helps keep the scalp fresh and clean, used in a low, skin-friendly amount that stays gentle on a sensitive scalp.

Plant Proteins

A trio of plant proteins, from corn, soy and wheat, that condition the scalp and hair. As the tonic dries they form a light, comfortable layer that helps the scalp and hair hold on to moisture, which is part of why the scalp feels less tight and the hair feels softer with regular use.

77%

of verified reviewers rate Scalp Shield Tonic 4 or 5 stars

79%

say their scalp feels calmer, less itchy and more comfortable

81%

say their scalp feels more hydrated and looks less flaky between washes

*Based on an analysis of 22 verified customer reviews of Hydrosil Scalp Shield Tonic. Individual results may vary.

Before After

01.

Turmeric Butter & Donkey Milk Salve

(morning and evening)
Smooth a little onto any dry, flaky or sore patches elsewhere on the face, keeping well clear of the eyes. It is the richer balm in the range, best on skin that needs more comfort.

02.

Dry Eye Gel

(morning and evening, plus any time for comfort)
Apply a small amount to the eyelids and the skin around the eyes to soothe itching and hydrate dry, tight skin. It goes on the skin, not in the eye.

03.

Dry Eye Concealer

(daytime, before make-up)
Smooth over the gel to cover and brighten the under-eye area while it keeps caring for the skin underneath.

+ Brows Hydrobrow Serum

(morning and evening, before brow make-up)
Stroke along the full length of the brows to soothe dry, flaky, itchy brows. You can wear it overnight too.

01.

Turmeric Butter & Donkey Milk Salve

(morning and evening)
Smooth onto dry, sore or flaky patches anywhere on the body, such as hands, elbows, knees or behind the ears. It works best on skin that is still slightly damp after washing, so it can lock in moisture, and a little goes a long way.

01.

Scalp Shield Shampoo

(on wash days)
Wash as normal to cleanse the scalp and gently wash away flakes, leaving it feeling clean and comfortable.

02.

Scalp Shield Tonic

(after washing, and between washes as needed)
After washing, work a little into the scalp while it is still damp to soothe and hydrate dry, itchy skin. Between washes, spritz on whenever the scalp feels dry or itchy.

Braids & Weaves

For scalps left dry, itchy and irritated by braids, weaves and other protective styles, Scalp Shield Tonic helps calm the itching and flaking and keeps the scalp feeling comfortable.

Hydrosil Dry Eye Gel, a 15ml green and white tube for dry skin around the eyes, containing Cardiospermum

Hydrosil Dry Eye Gel 15ml

For Eyelids & Eye Area Helps soothe itchy-feeling skin Steroid-Free Fragrance-Free

£10.95

Hydrosil Hydrobrow Serum, a clear 7ml brow serum with a white cap and green Hydrosil label, for dry, flaky brows

Hydrosil Hydrobrow Serum 7ml

For Dry, Flaky Brows Helps Soothe Itchy-Feeling Skin Steroid-Free Fragrance-Free

£8.50

Hydrosil Scalp Shield Duo Pack

For Dry, Flaky & Sensitive Scalps Soothes & Hydrates Steroid-Free Fragrance-Free

£19.95 ~~£21.90~~ Save 8%

A 75ml tube of Hydrosil Turmeric Butter & Donkey Milk Salve standing on a plain pale grey background

Hydrosil Turmeric Butter & Donkey Milk Salve 75ml

For Dry & Eczema-Prone Skin Soothes Itching Steroid-Free Face & Body

£11.95

Hydrosil Total Care Pack

Complete Head-to-Toe Routine Eyes, Brows, Scalp & Skin Steroid-Free For Dry, Eczema-Prone Skin

£46.95 ~~£67.25~~ Save 30%

1. What is Hydrosil Scalp Shield Tonic?

Hydrosil Scalp Shield Tonic is a gentle, leave-in scalp spray for dry, flaky and sensitive scalps. It is applied directly to the scalp after washing and between washes and left in to help maintain scalp comfort and hydration. The formula combines a patented passion fruit seed complex, a chicory root prebiotic, the active component of Australian tea tree and plant proteins to help comfort the scalp, hydrate the skin and reduce visible flaking while supporting the scalp's natural barrier. It is steroid-free, fragrance-free, vegan and dermatologically tested for sensitive skin.

2. What causes a dry, itchy, flaky scalp?

A dry, itchy, flaky scalp is usually a sign of dryness or sensitivity in the skin rather than a hair problem. It is often linked to eczema, seborrhoeic dermatitis or a contact reaction to ingredients in hair products, and cold or centrally heated air, sweat and stress can make it worse. Scalp Shield Tonic is made to soothe and hydrate this kind of dry, sensitive scalp.

3. How do I use Scalp Shield Tonic?

Use it once a day after washing, ideally with Hydrosil Scalp Shield Shampoo, while the hair is still damp. Part the hair in a few places, spray the tonic directly onto the scalp across the whole head and massage it in gently so it reaches the skin. Leave it in and style as normal, drying on a low to medium heat if you blow dry. Between washes, spritz it onto the scalp whenever it feels dry or itchy.

4. What is the difference between Scalp Shield Tonic and Scalp Shield Shampoo, and do I need both?

The Shampoo is a gentle, sulphate-free wash that cleanses the scalp and lifts away flakes without stripping. The Tonic is a leave-in spray that keeps soothing and hydrating the scalp after washing and between washes. They are made to work together: wash with the Shampoo, then spray on the Tonic. You can use the Tonic on its own, but most people find the two work best as a pair, which is why they are also sold together in the Scalp Shield Duo Pack.

5. Is a dry, flaky scalp the same as dandruff?

Not always. Ordinary dandruff is linked to a yeast on the scalp and tends to ease with anti-fungal, anti-dandruff shampoos. A dry, flaky, itchy scalp is more often down to dryness, sensitivity or conditions like eczema, and can feel worse after an anti-dandruff shampoo. If that sounds like your scalp, Scalp Shield Tonic is made for the dry, sensitive kind rather than the yeast-related kind.

6. Can I use it on scalp eczema or seborrhoeic dermatitis?

Scalp Shield Tonic is designed to soothe and hydrate dry, itchy, flaky scalps, including scalps prone to eczema, seborrhoeic dermatitis and contact reactions, and many customers with these conditions use it. It is a cosmetic product rather than a medicine, so it is not a treatment for these conditions. If you are under a doctor's care or using a prescribed product, check with them first, and as with any product for sensitive skin, patch test before first use and stop if it stings or irritates.

7. Does Scalp Shield Tonic contain steroids?

No. Scalp Shield Tonic is steroid-free. It works through naturally derived actives, a passion fruit seed complex, a chicory root prebiotic, Australian tea tree and plant proteins, rather than steroids, so it is made for gentle, everyday, long-term use.

8. What does Scalp Shield Tonic smell like?

It has a light, natural, slightly herbal scent that comes from the Australian tea tree, and it is free from added perfume. The scent is noticeable when you spray it on and settles as the hair dries. If you are sensitive to scent, this plant-based, fragrance-free smell is usually much gentler than perfumed hair products.

9. Can I use Scalp Shield Tonic on braids, weaves or protective styles?

Yes. Because it is a leave-in spray, you can spritz it straight onto the scalp between washes without disturbing the style, which suits braids, weaves and other protective styles that can leave the scalp dry, itchy and sore. It helps calm the itching and flaking and keeps the scalp feeling comfortable.

10. How long does Scalp Shield Tonic take to work?

Some people feel the scalp is calmer and less itchy within minutes of the first use, while for others it builds gradually. Most find the itching and flaking easing over two to three weeks of daily use, with the scalp feeling more settled after about a month. It is made for steady, everyday use rather than an overnight fix.

11. Is Scalp Shield Tonic vegan and cruelty-free?

Yes. Scalp Shield Tonic is vegan and is not tested on animals. It is also 98% natural, dermatologically tested for sensitive skin and made in Britain.

12. Is Scalp Shield Tonic suitable for sensitive skin, and does it contain anything I might react to?

It is dermatologically tested for sensitive skin and made without steroids, sulphates, parabens or added perfume. It does contain plant proteins derived from wheat, soy and corn, so if you have a known allergy to any of these, take care. As with any product for sensitive skin, patch test before first use and stop if it stings or becomes more irritated.