Is Hair Oil by OUAI safe?

Hair Oil is rated STOP by Million Marker due to ingredients with known health concerns. We recommend considering safer alternatives.

What harmful chemicals does Hair Oil avoid?

Million Marker evaluates products for harmful chemicals including BPA, phthalates, parabens, PFAS, flame retardants, and other endocrine-disrupting compounds. Hair Oil has been analyzed and rated STOP based on its ingredient profile.

Where can I buy Hair Oil?

You can purchase Hair Oil directly from OUAI or search online retailers for the best prices and availability.

How does Million Marker rate Hair Styling + Treatment?

Million Marker rates Hair Styling + Treatment and other products on a GO/SLOW/STOP scale based on ingredient safety analysis. GO products are the safest choices, SLOW products have moderate concerns, and STOP products contain ingredients we recommend avoiding.

Products are split into three levels based on ingredient labels

Best choice

SLOW

Contains ingredients with possible health concerns

STOP

Contains harmful ingredients

STOP

OUAI

Hair Oil

Last verified: April 7, 2026

Cyclopentasiloxane
Dimethicone
Prunus Amygdalus Dulcis (Sweet Almond) Oil
Isododecane
Hydrogenated Ethylhexyl Olivate
C12-15 Alkyl Benzoate
Phenyl Trimethicone
Simmondsia Chinensis (Jojoba) Seed Oil
Dimethiconol
Jojoba Esters
Butyrospermum Parkii (Shea) Butter
Helianthus Annuus (Sunflower) Seed Oil
Oryza Sativa (Rice) Bran Oil
Adansonia Digitata Seed Oil
Borago Officinalis Seed Oil
Crambe Abyssinica Seed Oil
Glycine Soja (Soybean) Oil
Passiflora Edulis Seed Oil
Moringa Oleifera Seed Oil
Coconut Alkanes
Kaempferia Galanga Root Extract
Helianthus Annuus (Sunflower) Extract
Amaranthus Caudatus Seed Extract
Oryza Sativa (Rice) Bran Extract
Daucus Carota Sativa (Carrot) Root Extract
Rosmarinus Officinalis (Rosemary) Leaf Extract
Tocopherol
Coco-Caprylate/Caprate
Ethylhexyl Methoxycinnamate
Polysilicone-15
Diisostearyl Malate
Hydrogenated Olive Oil Unsaponifiables
Beta-Carotene
BHT
Citric Acid
Benzoic Acid
Phenoxyethanol
Parfum (Fragrance)
Benzyl Benzoate
Citronellol
Benzyl Salicylate
Linalool
Hydroxycitronellal
Hexyl Cinnamal
Geraniol

Why This Product is Rated STOP

Hair Oil by OUAI has been evaluated by Million Marker and contains ingredients with known health concerns. This product is rated STOP, indicating higher concern.

We recommend avoiding STOP-rated products and seeking safer alternatives from our GO or SLOW categories.

Learn more about how Million Marker scores products →