Products are split into three levels based on ingredient labels

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Best choice
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Contains ingredients with possible health concerns
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Contains harmful ingredients
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Sienna Naturals

Lock and Seal Anti-Breakage Oil

Last verified: November 26, 2025

  • Butyrospermum Parkii (Shea) Oil
  • Shea Butter Ethyl Esters
  • Vitis Vinifera (Grape) Seed Oil
  • Cocos Nucifera (Coconut) Oil
  • Hydrogenated Castor Oil/sebacic Acid Copolymer
  • Adansonia Digitata Oil
  • Caprylic/capric Triglyceride
  • Tocopherol
  • Anthemis Nobilis Flower Oil
  • Cananga Odorata Flower Oil
  • Canarium Commune Gum Oil
  • Citrus Aurantium Dulcis (Orange) Flower Oil
  • Geranium Maculatum Oil
  • Jasminum Officinale (Jasmine) Flower/leaf Extract
  • Juniperus Virginiana Oil
  • Litsea Cubeba Fruit Oil
  • Rosa Damascena Extract
  • Rosa Damascena Flower Oil
  • Tanacetum Annuum Flower/leaf/stem Oil

Why This Product is Rated SLOW

Lock and Seal Anti-Breakage Oil by Sienna Naturals has been evaluated by Million Marker and contains some ingredients with possible health concerns. This product is rated SLOW, indicating moderate concern.

We recommend reviewing the ingredient list carefully and considering safer alternatives when possible. SLOW-rated products may still be acceptable for occasional use.

Learn more about how Million Marker scores products →

Frequently Asked Questions

Lock and Seal Anti-Breakage Oil by Sienna Naturals - Non-toxic Hair Styling + Treatment product rated SLOW by Million Marker, free from BPA, phthalates, and parabens

Where to buy

Sienna Naturals Google Search

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