What it is: A plant-based, anti-breakage bonding oil that cares for split ends and smooths down damaged cuticles for up to five washes.

Hair Texture: Curly and Coily

Hair Type: Fine, Medium, and Thick

Hair Concerns:
- Damage, Split Ends, and Breakage
- Heat Protection
- Shine

Key Benefits:
- Re-bonds split ends
- Smooths down damaged cuticles
- Provides shine without residue

Highlighted Ingredients:
- Shea Oil: Restores moisture and suppleness to very dry, damaged hair without buildup.
- White Grapeseed Oil: Seals in moisture, fights frizz, and adds shine.
- Shea Esters: A natural compound that increases slip with a clean, silky finish.

Ingredient Callouts: This product is vegan, gluten-free, cruelty-free, and comes in recyclable packaging.

What Else You Need to Know: Moisturizing plant oils are boosted by Sienna Naturals innovative Anti-Breakage Technology that re-bonds hair cuticles damaged by heat styling, bleaching, and brushing. Lock & Seal oil is engineered to seal down damaged hair cuticles and split ends for up to five washes while increasing moisture retention.

Fragrance Description: Fresh herbaceous floral scent with hints of citrus, featuring ylang-ylang, jasmine, rose, chamomile, orange, and geranium.

Clinical Results: In a consumer-perception study of 46 people ages 18 and over who have purchased Sienna Naturals 2 or more times:
- 91% said their hair looked healthier after using Lock & Seal for one month
- 89% said Lock & Seal reduced frizz after 1 use
- 85% said Lock & Seal helped hair have less breakage after one month


Clean at Sephora is our commitment to offering effective products without certain ingredients, such as parabens, sulfates, phthalates, and mineral oils. Learn more here.