Finally. A Serum Built
for Seborrheic Dermatitis.
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"Seborrheic dermatitis is fundamentally a barrier disease — the flaking and itch are symptoms of what's happening underneath. Copper peptides are one of the few cosmetic ingredients with meaningful evidence for supporting barrier integrity. This is the missing piece most patients never try."
- Cleanse first. Shampoo or cleanse as normal. If using a medicated wash, apply Derval after — not before.
- Scalp: Part hair and apply 4–6 drops directly to the scalp. Massage gently with fingertips. Do not rinse.
- Face & skin: Apply 1–2 drops to affected areas (brows, nose crease, ears). Press gently — do not rub. Apply before moisturiser.
- Leave in overnight. Use every other night to start; increase to nightly once skin has adjusted.
Can I use it on my face?
Yes. Apply 1–2 drops to affected facial areas after cleansing. Avoid the eye area. Patch test first if your skin is very reactive.
How long before I see results?
Most people notice reduced itch within 1–2 weeks. Visible reduction in flaking typically takes 3–6 weeks of consistent use.
Is it fragrance-free?
Yes — no added fragrance, sulphates or parabens. Formulated for reactive, sensitive skin.
Key actives: GHK-Cu Copper Tripeptide-1 (2%), Niacinamide, Zinc PCA, Panthenol (Pro-Vitamin B5), Allantoin, Sodium Hyaluronate.
Full INCI: Aqua, Glycerin, Niacinamide, Panthenol, Zinc PCA, Sodium Hyaluronate, Allantoin, Copper Tripeptide-1, Hydroxyethylcellulose, Phenoxyethanol, Ethylhexylglycerin.
Fragrance-free · Sulphate-free · Paraben-free · Vegan
Why Trust Derval?
The problem
Your scalp stopped protecting itself
There's a thin outer layer on your scalp that keeps moisture in and irritants out. When it weakens, it doesn't simply bounce back. Everyday things get through, the skin stays irritated, and you end up scratching without noticing.
That's why the flakes are back two days after washing. Why the itch never quite settles. Why there seems to be more hair in the brush than there used to be.
The solution
A scalp serum built for the barrier
2% GHK-Cu. One job: help the barrier hold.
Lift what's built up
Flakes sit on top of the scalp and stop anything reaching skin. 0.5% salicylic acid gently lifts them, so the rest of the formula gets where it needs to be.
Calm what's irritated
Niacinamide and panthenol hold moisture in and help a tight, itchy scalp feel comfortable. Less irritation means fewer reasons to reach up and scratch.
