sh-Oligopeptide-1 (EGF)
A cosmetic peptide used in smoothing-focused care to help soften the appearance of fine lines.
What it is: A leave-on, water-like facial serum that supports smoother-looking texture and visible lines while helping soothe stressed-looking skin.
Net weight: 20 ml
Hello, blue hour. Midnight Blue Youth Activating Drop is a leave-on facial serum designed as an early, water-like step for visible lines, uneven texture and soothing care. KLAIRS now calls it EGF Blue Youth Activating Drop; it is the same Blue-line peptide serum under an updated name.
At its center is dual-peptide care for visible lines and smoother-looking texture. sh-Oligopeptide-1 (EGF) supports care focused on newer fine lines, while sh-Polypeptide-1 (bFGF) supports the appearance of deeper-set wrinkles. Adenosine rounds out the smoothing story with care for a softer-looking skin surface.
The blue tone comes from naturally derived guaiazulene, an ingredient that brings soothing care for stressed or sensitized-looking skin. Slight variation in the serum's shade can occur without affecting its quality.
Despite the serum name, the feel is closer to a hydrating essence: its thin, watery texture absorbs quickly without a sticky or heavy finish. The fragrance-free formula is suitable for all skin types, including sensitive skin, and carries non-comedogenic and sensitive-skin test claims.
Learn moreSee how the serum supports smoother-looking texture, a calmer appearance and hydration without a heavy finish.
A cosmetic peptide used in smoothing-focused care to help soften the appearance of fine lines.
A cosmetic peptide that helps soften the appearance of deeper-set wrinkles for a smoother-looking complexion.
A skin-calming cosmetic ingredient used to support a calmer-looking, more comfortable complexion.

A skin-conditioning ingredient commonly used to help skin look smoother and soften the appearance of fine lines.
A berry-derived botanical extract that helps nourish lips.

A classic humectant that helps skin hold water and feel softer and smoother.
Results published by WishTrade, KBeautyBook and Korean Beauty. Individual results may vary.

When visible lines and uneven texture leave your skin looking less smooth.
When external stressors leave your skin looking sensitized or unsettled.
When your skin needs hydration but a rich, heavy serum feels like too much.
Dual peptides support care for visible lines, while the serum targets overall texture.
Guaiazulene supports a calmer-looking complexion when skin appears sensitized.
Hydration support arrives in a thin, essence-like layer rather than a rich serum feel.

Buy these products together
This itemMidnight Blue Youth Activating Drop Serum$30.00
1+1 Aquatica UV Defense Sunscreen OTC$46.00
30 Seconds Quick Bubble Mask Clear$32.00Total price: $108.00
This itemMidnight Blue Youth Activating Drop Serum$30.00
1+1 Aquatica UV Defense Sunscreen OTC$46.00
30 Seconds Quick Bubble Mask Clear$32.00Total price: $108.00