A treatment mask only works as hard as the conditions you give it, and the Biologique Recherche Charlotte de Soin is the accessory that gets more out of every one you use. This sophisticated treatment cap gently warms the scalp so your favourite masks can actually do their job. It is a small, deceptively simple addition that upgrades an ordinary mask night into something closer to a professional treatment.
Why you will love this Charlotte de Soin cap
Its unique polyethylene lining helps retain the scalp’s natural warmth, gently warming the hair and scalp during treatments. This increased warmth helps open the hair cuticles, supporting the penetration and absorption of active ingredients for enhanced product performance. It sits comfortably enough to wear while doing other things around the house, rather than sitting still and waiting.
- Retains natural heat to boost treatment performance
- Helps open the hair cuticle for deeper absorption
- Suitable for all hair types
- Elasticated edge for a comfortable, secure fit
- Reusable and machine washable up to 30°C
- Turns any hair mask into a more effective treatment
- Practical, lightweight design
What it does
Worn over hair coated in a treatment, the cap’s lining traps the scalp’s own warmth, which helps open the cuticle so active ingredients can penetrate more effectively, leaving hair shinier, softer and more supple. The difference is often most obvious the next time you run a brush through freshly washed hair.
Who it is for
Suits anyone who regularly uses hair masks or treatments and wants to get more visible results from them, whatever their hair type.
How to use it
- After applying your treatment to towel-dried hair, place the cap on top of your head, tucking all hair inside
- Leave on for 10 to 15 minutes
- Remove the cap and rinse your scalp
- Rinse the cap after use and machine wash at a maximum of 30°C
Key details
- Brand: Biologique Recherche (France)
- Product type: heat-retaining treatment cap
- Best for: boosting the effectiveness of any hair mask or treatment
- Material: polyethylene lining with elasticated edge
- Care: reusable, machine washable at up to 30°C
- Delivery: available in Cairo and across Egypt with cash on delivery
Frequently asked questions
Can I use the Charlotte de Soin cap with any hair mask?
Yes, it is designed to enhance the effectiveness of hair-care treatments generally and can be used with your favourite mask.
Is the treatment cap reusable?
Yes, it is practical and reusable, and machine washable at a maximum of 30°C.
Size
One treatment cap with elasticated edge.








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