Sienna Naturals
Lock & Seal Hair Oil Split End Treatment
Highly rated by customers for: , ,
$32.00or 4 payments of $8.00 with 
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Size: 3 oz
Standard size
Highlights
Good for: Damage
Clean at Sephora
Vegan
Increases Shine
Bond Building
Good for: FrizzAbout the Product
Item 2803096
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
Our commitment to offering formulas that go beyond regulatory standards to avoid controversial ingredients without sacrificing effectiveness.
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
Our commitment to offering formulas that go beyond regulatory standards to avoid controversial ingredients without sacrificing effectiveness.
-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.
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.
The list of ingredients is subject to change. Please consult the packaging of the product purchased.
-White Grapeseed Oil: Seals in moisture, fights frizz, and adds shine.
-Shea Esters: A natural compound that increases slip with a clean, silky finish.
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.
The list of ingredients is subject to change. Please consult the packaging of the product purchased.
Suggested Usage:
-Apply to damp or dry hair after your leave-in conditioner and styling products—a little goes a long way.
-Apply to damp or dry hair after your leave-in conditioner and styling products—a little goes a long way.
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Co-founded by Issa Rae and Hannah Diop, Sienna Naturals provides H.A.P.I. plant-based performance for healthy hair and scalp with products that bring wellness to washday and provide compromise-free styling that empowers expression. Hannah was raised with an earth-friendly ethos but struggled to find hair care that actually worked. Feeling frustrated about the lack of high-performance plant-based products, Hannah created Sienna Naturals. Sienna Naturals solves our most pressing concerns (dryness, damage, hair loss, curl definition, and scalp sensitivity) using Hydrating, Alimentary, pH-Balanced ingredients (H.A.P.I.). Our dermatologist-tested formulas are powered by plant-based ingredients inspired by ancestral traditions and proven to enhance performance and repair hair health from the root, starting with the scalp. Because a H.A.P.I. scalp makes for happy hair!