Mielle Organics Rosemary Mint Scalp & Hair Strengthening Oil
At a glance
Summary
Mielle Organics Rosemary Mint Scalp & Hair Strengthening Oil scores 85/100 -- a clean, plant-oil-and-vitamin-forward scalp oil with one of the most evidence-backed actives in hair care. Zero parabens, zero sulfates, zero paraffins, zero mineral oil, zero DEA, zero synthetic fragrance, zero silicones, zero PEGs, zero phthalates (all confirmed on the front label). The active stack is unusually strong: rosemary leaf oil (Panahi 2015 RCT showed rosemary oil matched 2% minoxidil for hair regrowth at 6 months), castor oil for cuticle conditioning, jojoba oil (sebum-mimetic), peppermint and tea tree oils for scalp circulation and antimicrobial activity, and a comprehensive plant-oil base (coconut, sweet almond, grape seed, rice bran, evening primrose, safflower, wheat germ). The vitamin trio -- Tocopheryl Acetate (E), Cholecalciferol (D), and Ascorbic Acid (C) -- plus biotin and glycerin support the formula. Traditional hair-care herbs (horsetail, burdock root, nettle, sage, celery seed) round it out. The product carries a 'Dermatologist Verified - Safe & Effective' badge from the Skin Health Alliance. The score sits just below the 94 single-oil tier because (1) Benzyl Nicotinate is a niacin ester included intentionally to cause scalp warming/vasodilation, which can be sensitizing for some users when stacked with menthol and the essential oil load, and (2) Mielle Organics was acquired by Procter & Gamble in January 2023, a recent corporate-ownership change.
Key ingredients 16
Rosmarinus Officinalis (Rosemary) Leaf OilVery Good
The flagship active. Panahi 2015 RCT (n=100, 6 months) showed rosemary oil matched 2% minoxidil for hair regrowth in androgenetic alopecia, with significantly less scalp itching. The strongest clinical evidence for any plant-derived hair growth active.
See more about Rosmarinus Officinalis (Rosemary) Leaf Oil →Ricinus Communis (Castor) Seed OilVery Good
Ricinoleic-acid-rich oil; documented humectant and emollient activity for hair shaft conditioning. Improves shine and elasticity, can be rinsed out without sulfates.
See more about Ricinus Communis (Castor) Seed Oil →Simmondsia Chinensis (Jojoba) Seed OilVery Good
Liquid wax structurally similar to human sebum; uniquely well-tolerated and non-comedogenic. Stable against oxidation thanks to the wax-ester profile.
See more about Simmondsia Chinensis (Jojoba) Seed Oil →Mentha Piperita (Peppermint) OilVery Good
Single-source named essential oil. Menthol provides cooling sensation and stimulates scalp circulation; Oh 2014 RCT showed increased follicle depth and density at 3% topical application.
See more about Mentha Piperita (Peppermint) Oil →Cocos Nucifera (Coconut) OilVery Good
One of the few oils that penetrates the hair cortex (alongside avocado and olive). Lauric-acid-rich; reduces protein loss during washing.
See more about Cocos Nucifera (Coconut) Oil →Prunus Amygdalus Dulcis (Sweet Almond) Oil + Oryza Sativa (Rice) Bran Oil + Vitis Vinifera (Grape) Seed OilVery Good
Three additional plant-oil carriers; all rich in oleic/linoleic fatty acids and tocopherols. Lightweight, non-comedogenic emollient base.
See more about Prunus Amygdalus Dulcis (Sweet Almond) Oil + Oryza Sativa (Rice) Bran Oil + Vitis Vinifera (Grape) Seed Oil →Tocopheryl Acetate (Vitamin E) + Ascorbic Acid (Vitamin C) + Cholecalciferol (Vitamin D)Very Good
Antioxidant vitamin trio. Vitamin E stabilizes the oil phase; Vitamin C is a topical antioxidant; Vitamin D receptors are expressed in the hair follicle and have documented roles in hair cycling.
See more about Tocopheryl Acetate (Vitamin E) + Ascorbic Acid (Vitamin C) + Cholecalciferol (Vitamin D) →Aloe Barbadensis Extract + GlycerinVery Good
Acemannan polysaccharides plus the gold-standard humectant; anti-inflammatory and lightly hydrating.
See more about Aloe Barbadensis Extract + Glycerin →Lavandula Angustifolia (Lavender) OilVery Good
Single-source named essential oil with documented antimicrobial activity; Hay 1998 RCT showed lavender oil massage improved alopecia areata.
See more about Lavandula Angustifolia (Lavender) Oil →Melaleuca Alternifolia (Tea Tree) Leaf OilGood
Documented antimicrobial activity against Malassezia yeast (the cause of seborrheic dermatitis and most dandruff). EWG 1-3.
See more about Melaleuca Alternifolia (Tea Tree) Leaf Oil →Oenothera Biennis (Evening Primrose) Oil + Carthamus Tinctorius (Safflower) Seed Oil + Triticum Vulgare (Wheat) Germ OilGood
Three more plant oils that add gamma-linolenic acid (GLA), linoleic acid, and Vitamin E. Wheat germ oil is naturally the richest food source of tocopherols.
See more about Oenothera Biennis (Evening Primrose) Oil + Carthamus Tinctorius (Safflower) Seed Oil + Triticum Vulgare (Wheat) Germ Oil →BiotinGood
B-vitamin supporting keratin synthesis; clean and safe at use levels. Topical evidence is weaker than oral but harmless.
See more about Biotin →Equisetum Arvense (Horsetail) Extract + Arctium Lappa (Burdock) Root Extract + Urtica Dioica (Nettle) Extract + Salvia Officinalis (Sage) + Apium Graveolens (Celery) Seed ExtractGood
Five traditional hair-care botanicals. Horsetail contributes silica; nettle has folk evidence for hair loss; sage and burdock are traditional scalp tonics.
See more about Equisetum Arvense (Horsetail) Extract + Arctium Lappa (Burdock) Root Extract + Urtica Dioica (Nettle) Extract + Salvia Officinalis (Sage) + Apium Graveolens (Celery) Seed Extract →Ocimum Basilicum (Basil) Oil + Pogostemon Cablin (Patchouli) Oil + Eucalyptus Globulus (Eucalyptus) Leaf Oil + MentholNeutral
Additional aromatic essential oils plus menthol; contribute to the cooling/stimulating sensation. All single-source named ingredients (no undisclosed synthetic fragrance).
See more about Ocimum Basilicum (Basil) Oil + Pogostemon Cablin (Patchouli) Oil + Eucalyptus Globulus (Eucalyptus) Leaf Oil + Menthol →Benzyl NicotinateNeutral
Niacin (Vitamin B3) ester; included intentionally as a vasodilator that increases scalp blood flow and produces a warming/flushing sensation. Functional active rather than a contaminant, but can be sensitizing in some users.
See more about Benzyl Nicotinate →Glycine Soja (Soybean) Oil + SilicaNeutral
Soybean oil functions as the primary carrier base (first ingredient); silica appears as a trace mineral. Both inert at use levels.
See more about Glycine Soja (Soybean) Oil + Silica →Get the full breakdown in the Scout appTake Scout shopping
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