Saturday Skin Scalp Hair Strengthening Overnight Serum — Caffeine, Peptides & Keratin for Thicker, Fuller Hair

Saturday Skin Scalp Hair Strengthening Overnight Serum is a lightweight, leave-on treatment designed to support scalp vitality and help strands look fuller by morning. The formula blends caffeine for gentle stimulation, a 15-peptide complex that includes collagen and keratin to bolster elasticity, and hop yeast for essential nutrients. Niacinamide helps balance the scalp barrier, while salicylic acid adds a mild clarifying action. The result is a refreshing, cooling sensation that absorbs quickly without weighing hair down, so you can prepare for the next day with a clearer, more vibrant feeling at the roots. The product has been dermatologist tested and is free from parabens, sulfates, synthetic fragrance, and artificial color, making it suitable for a wide range of hair types, including thin or dry hair.

How it works

• Overnight, the lightweight serum stays on the scalp to nourish and support the look of denser hair by morning.
• The key actives include caffeine to energize the scalp, a 15-peptide complex with collagen and keratin to support elasticity, and hop yeast for scalp nutrients.
• Niacinamide helps balance the scalp barrier, while salicylic acid provides mild clarifying action for a refreshed feel.

How to use

• Apply to a clean, dry or towel-dried scalp.
• Shake well and dispense a few drops once daily, ideally at night.
• Massage gently into the scalp and leave on; no rinse needed.

What you might notice

• Wake up to a healthier-looking scalp and less visible frizz at the roots.
• Over time, hair may feel stronger and more resilient with improved texture and density.
• The formula remains lightweight and non-greasy, so hair stays refreshingly clean between washes.

Clean and safe formula

Dermatologist tested and formulated without parabens, sulfates, synthetic fragrance, or artificial color. Suitable for all hair types, including thin and dry hair, with a focus on gentle, effective care.

Who should try it

For anyone seeking a nighttime scalp treatment to support the appearance of healthier hair and scalp vitality, especially those with fine or dry hair textures.