Scalp & Hair Strengthening Oil
Scalp & Hair Strengthening Oil
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COSMOS
Hair quality starts at the scalp. Most men only treat what's already grown.
The scalp is skin and it's treated worse than any other skin on the body. Daily shampooing strips it. Product buildup blocks it. It gets no moisturiser, no treatment, and no attention until something visibly goes wrong. Dryness, flaking, itching, and hair that feels weak and brittle all start there.
The Rosemary Hair & Scalp Strengthening Oil is a leave-in treatment for the scalp rather than a rinse-off product for the hair. Rosemary and peppermint oils create the cooling, stimulating sensation of increased surface circulation. Castor oil, rich in ricinoleic acid, has been used for generations to condition hair and scalp. Nettle leaf extract, argan, hemp, and avocado oils nourish the skin the hair grows from.
Apply a few drops to the scalp after washing, or leave overnight. Massage into the crown and hairline the areas that show wear first. Used consistently three to four times a week, it keeps the scalp conditioned and the hair it produces stronger.
How to Use
3–4x Weekly After Wash or Overnight
Part your hair to expose the scalp focus on the crown and hairline.
Dispense 4–6 drops directly onto the scalp.
Massage in with your fingertips for 2–3 minutes. The massage matters as much as the oil.
Leave in do not rinse. Use after washing, or apply overnight before bed.
Use three to four times a week. Scalp condition improves gradually, not overnight.
Allergen note: This formula contains Sweet Almond Oil and Argan Kernel Oil, plus a natural essential oil blend including clove and citrus. If you have a tree nut allergy or react to essential oils, patch test behind the ear and wait 24 hours before full scalp use.
Key Ingredients
Rosemary + Peppermint Oil
The cooling tingle you feel on application. Both are traditional scalp botanicals, used for centuries in hair preparations and valued for the sensation of stimulation they create at the surface.
Castor Oil
Rich in ricinoleic acid and unusually viscous, so it coats and conditions the hair shaft. The traditional hair oil, used for generations for exactly this purpose.
Nettle Leaf Extract
A long-standing ingredient in scalp preparations. Included here for its conditioning and soothing properties on skin that rarely gets treated.
Argan, Hemp & Avocado Oil
Three lipid-rich plant oils that condition the scalp barrier and soften the hair. Absorb without the heaviness of mineral-oil-based hair products.
Full Ingredient List — INCI
Helianthus Annuus (Sunflower) Seed Oil*, Decyl Cocoate, Ricinus Communis (Castor) Seed Oil*, Prunus Amygdalus Dulcis (Sweet Almond) Oil*, Argania Spinosa (Argan) Kernel Oil*, Parfum, Cannabis Sativa (Hemp) Seed Oil*, Olea Europaea (Olive) Fruit Oil*, Persea Gratissima (Avocado) Oil*, Mentha Piperita (Peppermint) Oil*, Rosmarinus Officinalis (Rosemary) Leaf Oil*, Urtica Dioica (Nettle) Leaf Extract*, Menthol**, Limonene**, Camphor**, Pinene**, Citrus Aurantium Bergamia Peel Oil, Linalool**, Beta-Caryophyllene**, Vanillin, Linalyl Acetate**, Eugenia Caryophyllus (Clove) Oil, Eugenol**, Citrus Aurantium Peel Oil, Citrus Limon Peel Oil, Pogostemon Cablin Oil, Santalol**, Coumarin, Carvone**.
*From organic farming · **From natural essential oils · Vegan · COSMOS NATURAL certified by ECOCERT Greenlife
Questions
Why treat the scalp at all?
Because it's skin, and it's the skin your hair grows out of. A dry, tight, or flaking scalp produces hair that feels worse regardless of what conditioner you use on the ends. Most men's grooming routines skip it entirely.
Will this make my hair greasy?
The oil is formulated to absorb into the scalp rather than coat the hair. Use the recommended 4–6 drops, applied directly to the scalp and massaged in. For zero visible residue, apply as an overnight treatment and wash it out in the morning.
Why does it tingle?
Peppermint oil and menthol. The cooling sensation is normal and fades within a few minutes. If it feels uncomfortable rather than cooling, use fewer drops or dilute with a plain carrier oil.
How long does one bottle last?
At 4–6 drops, three to four times per week, the 30ml bottle lasts approximately 8–12 weeks.
Treat the Scalp. The Hair Follows.
Pair with the Scalp Scrub and Strength Shampoo for the complete Reign routine.
Explore Reign →
