Moroccanoil, the global leader in oil-infused beauty, is redefining overnight haircare with the launch of the new Moroccanoil Overnight Leave-in Mask, an innovative leave-in treatment that deeply hydrates, nourishes, and smooths hair while you sleep. Inspired by the Korean skincare phenomenon snail mucin, Moroccanoil uses a vegan alternative that powers the lightweight, pillow-safe formula—delivering up to 4x more hydration overnight* for softer, silkier, and healthier-looking hair by morning.

Overnight Leave-in Mask’s weightless formula simplifies your morning routine by reducing frizz, minimizing split ends, and preventing tangles while you sleep. Wake up to dreamy hair that is 3x easier to detangle* with lasting smoothness—without any residue on your hair or pillow.

The transformative formula is powered by a breakthrough blend of high-performing ingredients:

• Argan Oil: extremely rich in tocopherols (Vitamin E), essential fatty acids, and antioxidants, this natural oil helps to nourish.
• Supercharged Hyaluronic Acid: a blend of seven molecular weights of hyaluronic acid to ensure maximum hydration, nourish and soften the hair, and help to enhance elasticity.
• Vegan Snail Mucin: a bio-engineered snail mucin alternative made from vegan sources, this K-beauty star helps condition and hydrate hair by replicating the healing and regenerative properties of snail mucin, helping to seal the cuticle and lock in moisture.

“In today’s beauty landscape, consumers are looking for hardworking products that simplify routines while still delivering visible results,” says Moroccanoil Global Ambassador Owen Gould. “The Overnight Leave-in Mask offers an easy, luxurious treatment that works while you rest, so you can wake up to healthier-looking, touchably soft hair.”

In a consumer study:

• 98% loved how easy the mask is to use
• 96% agreed hair looks and feels healthy
• 94% agreed hair has lasting smoothness
• 94% agreed the mask is comfortable to sleep in

To use, apply to damp or dry hair before bedtime, from mid-length to ends. No rinsing necessary. For fine hair, use 1–2 pumps. For medium hair, use 2–3 pumps. For thick or curly hair, use 3–4 pumps. It can also be used as a daytime treatment, especially for second or third-day hair, to provide an instant boost of hydration.

Overnight Leave-in Mask (4 FL.OZ. / 120 ml, $40) will be available at Moroccanoil salons nationwide beginning September 1, 2026. It will launch on the Sephora app on August 27, followed by Sephora stores and Moroccanoil.com on August 28. Beginning October 8, 2026, it will also be available at Amazon.com, Bloomingdale's, Bluemercury, Dermstore.com, Nordstrom, Revolve.com, and Ulta.com.