K18 Biomimetic HairscienceMolecular Repair Hair Oil - Smooth + Repair Damaged Hair
Product Description
Highlights
This biotech-engineered weightless oil works on all hair types to strengthen, repair damage, reduce frizz at two levels of the hair fiber, and improve shine. Reverses damage caused by frizz Smooths frizz and flyaways Enhances shine and color vibrancy This strengthening, smoothing hair oil works on two levels of the hair fiber to fight frizz. The K18PEPTIDE™ works to address deeper level damage that causes frizz, repairing and strengthening damage at the innermost layer of the hair fiber to reverse damage that leads to frizz. On the surface of hair, natural oils like avocado and sunflower oil and hemisqualane and squalane nurture while smoothing frizz and flyaways to improve color vibrancy, enhance shine, and provide heat protection up to 450°F (232°C). Clinical Results: In a 3rd party clinical study, one use of the K18 Molecular Repair Hair Oil delivered: - 24-hour frizz control* - 104% improvement in shine** - 78% reduction in split ends*** *Results observed on curly, frizzy hair after 24 hours in 80% relative humidity, with one application of molecular repair hair oil on dry or damp hair **Results observed after a single application of molecular repair hair oil on dry hair ***Results observed on bleached/damaged hair after one application of molecular repair hair oil on dry hair
Directions
-Designed to be used on both damp and dry hair for maximum impact. -This is a concentrated formula. Start with one to three drops and build as needed. -Apply to damp hair from mid-lengths to ends before styling. -Apply to dry hair as a finisher. -Can be used after the K18 Leave-In Molecular Repair Hair Mask (after four-minute processing time, sold separately) for enhanced softening and styling benefits.
Test results
Clinically proven to repair damaged hair(1)24-HR frizz control(2)
104% more shine(3)
78% reduction in split ends(4)
450°F (232°C) heat protection(5)
(1) Results observed on bleached hair tress after one application of molecular repair hair oil
(2) Results observed on curly, frizzy hair after 24 hours in 80% relative humidity, with one application of molecular repair hair oil on dry or damp hair
(3) Results observed after one application of molecular repair hair oil on dry hair
(4) Results observed on bleached/damaged hair after one application of molecular repair hair oil on dry hair
(5) Results observed after one application of molecular repair hair oil and application of 450 degree flat iron on dry hair
92% agreed this formula improves shine(6)
89% agreed hair looks instantly moisturized(6)
89% agreed hair feels smoother(6)
89% agreed this formula feels weightless(6)
(6) Results observed on 37 people after 14 days
Composition
K18PEPTIDE™ reverses hair damage that causes frizz, promotes strength and smoothness.Hemisqualane and Squalane reinforce hair's moisture barrier, smooth flyaways, enhance shine.
Avocado Oil provides heat protection up to 450°F (232°C).
This product is vegan and cruelty-free.
Fragrance Description: Fresh floral scent
More information
Clean at SephoraIngredients
Caprylyl Caprylate/Caprate, Squalane, Persea Gratissima (Avocado) Oil, Helianthus Annuus (Sunflower) Oil, C13-15 Alkane, Undecane, Benzyl Alcohol, Tridecane, Castor Isostearate Succinate, Propanediol, sh-Oligopeptide-78, Fragrance (Parfum), Tocopherol, Cinnamal, Hexyl Cinnamal, Limonene, Linalool.
This list of ingredients may be subject to change, please consult the packaging of the product purchased.
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Rated 5 out of
5
by
AMELIE from
good product
even though the bottle is small I felt like it still lasted ages. I would recommend using on wet her before styling as it refuses frizz well.
Date published: 2026-05-04
Rated 5 out of
5
by
Libby from
great for styling
definitely pricey but a really great product , i find it works best on damp hair and then heat styling which makes the hair looks so healthy
Date published: 2026-05-02
Rated 5 out of
5
by
Erika from
Pricey but great!
I’m so glad I bought this it was worth the money it just leaves my ends and my hair feeling soft and I have curly hair and used it on both hair straight and curly hair
Date published: 2026-04-28
Rated 5 out of
5
by
SAM from
Love
I’ve used this 3 times and have low porosity hair. I found this product great for my hair and leaves it shiny and without frizz. I’ve since brought the leave in conditioner
Date published: 2026-03-29
Rated 5 out of
5
by
SHANO from
K18
Very good hair oil
Date published: 2026-03-18
Rated 5 out of
5
by
Abdalla from
Luxurious high-performing oil
I really like this oil, my hair is instantly nourished and stays that way for days until I wash it again. Also, you only need like 2 or 3 drops so even though it’s a small bottle, it still lasts a really long time
Date published: 2026-02-19
Rated 5 out of
5
by
Lynn from
Expensive but worth it
A very concentrated product, only need a tiny amount to add a really healthy finish to hair
Date published: 2026-02-10
Rated 5 out of
5
by
Katie from
Hair oil
I got my order today & I love using it at the hairdresser & it’s my favourite & great for a Christmas present
Date published: 2025-12-22
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