The Doctor. Hair Serum with Urea and Allantoin Soothing, 89 ml

What This Serum Does

Elfa Pharm "The Doctor" Hair Serum Urea + Allantoin 89 ml is a leave-in scalp and hair serum designed for situations when the scalp feels dry, tight or easily irritated, and the hair itself becomes brittle, rough or hard to detangle. It offers lightweight hydration without heavy oils, keeping roots feeling fresher while giving lengths softness and manageability.

Key Ingredients

• Urea — a well-known humectant that helps bind water in the upper layers of the skin and in the hair fiber, which can reduce the feeling of dryness and improve flexibility.
• Allantoin — valued in cosmetic scalp products for its calming effect; helps soften the surface and makes irritation feel less noticeable, useful when the scalp reacts to weather, styling products or frequent washing.
• Niacinamide — a form of vitamin B3 included to help support scalp barrier function and improve the overall feel of the skin.
• Betaine and Glycerin — add extra hydration to both scalp and lengths.

Who It Suits and When to Use It

This serum works for both the scalp and the lengths — it is not limited to one or the other. The lightweight texture absorbs quickly, making it a practical addition to a post-wash routine, for example after shampooing when the scalp feels tense, or when dry ends and flyaways need a softer finish.

It may be a good fit for:

• Dry or tight scalp, especially in heated indoor air or during seasonal changes
• Hair exposed to frequent blow-drying or repeated styling
• Curly, porous or tangle-prone hair that benefits from extra slip and a more supple feel
• Anyone who wants smoother, more manageable hair without a greasy coating

Over time, regularly moisturized lengths often look shinier and feel less stiff.

Important Notes

As with any active scalp cosmetic, pay attention to how your skin responds, especially if you are sensitive to fragrance or using exfoliating scalp products at the same time. Avoid applying to visibly damaged skin, and stop use if irritation increases rather than settles.