Silk protein for high-end soaps

Silk protein is a gentle active ingredient for the skin: it helps retain moisture, leaves skin smooth and soft, and forms a light protective film on its surface. That is why we chose it for all our soaps. Here is what silk protein is, its benefits for the skin, and how to enjoy a silk soap every day.

What is silk protein?

Silk protein comes from the natural fibres produced by the silkworm. These fibres are made of two proteins: fibroin, which forms the core of the thread, and sericin, which coats it.

In cosmetics, hydrolysed silk protein is most often used: the protein is broken down into smaller fragments, which makes it easier to include in a formula and more available to the skin. In particular, it provides amino acids such as glycine, alanine and serine.

What are the benefits of silk protein for the skin?

It helps skin stay hydrated

Silk protein acts as a moisturising agent. Its amino acids help the skin retain water. By forming a thin barrier on the surface, it limits dryness and contributes to the skin's moisture balance. It is particularly suited to sensitive or dehydrated skin.

It makes skin soft and smooth

The amino acids in silk protein improve the ability of the skin's outer layer to retain water. Skin looks smoother and silkier, with a softening effect you can see after every wash.

It protects the skin's surface

Silk protein forms a light film that adheres to the surface of the skin and limits water loss. This film supports the skin barrier and helps the skin cope better with external stressors, such as pollution, cold or changes in temperature. Sericin is also credited with antioxidant properties. Better-protected skin is often less prone to tightness and minor redness.

It makes washing more pleasant

Silk protein soaps give a light, creamy lather with fine bubbles. A rich texture that turns every wash into a moment of care.

Why did Homnès choose silk protein for its soaps?

At Homnès, we want every moment of care to be both effective and enjoyable. Silk protein embodies this philosophy: combining performance and gentleness. In our soaps, it cares for the most demanding skin and offers a gentle wash that leaves no tight feeling.

Our silk soaps are 6% superfatted, cold processed and made in small batches in Paris. They come in four scents: rose (with white and red clays), cedar and patchouli, vanilla, and aloe vera. To discover how they are made, read The steps in making a Homnès soap.

For your hair, our solid conditioner, with avocado oil and shea butter, detangles, softens and adds shine without weighing hair down.

How to use a silk protein soap

A soap enriched with silk protein is made for daily use. A few tips to get the most out of it:

• use it in the shower for gentle cleansing, on the body as well as the hands;
• pair it with a moisturiser to reinforce the protective effect on the skin;
• reach for it after prolonged exposure to external stressors (cold, pollution, sun);
• let it dry between uses, for example on a magnetic soap holder, so it lasts longer.

To choose the scent and formula that suit your skin, see How to choose the right soap.

Frequently asked questions

Is silk protein suitable for sensitive skin?

Yes, it is a gentle active ingredient, appreciated by sensitive or dry skin. If you have a known allergy or persistent irritation, ask a dermatologist for advice.

What is the difference between fibroin and sericin?

They are the two proteins in silk thread. Fibroin forms the core of the thread, sericin wraps around it. Both are used in cosmetics.

Can you use a silk soap every day?

Yes. Superfatted and gentle, our silk soaps are designed for daily use.