Alpecin Scalp Sun Liquid

Questions and answers

Sunlight exposes the Earth to ultraviolet (UV) radiation, the intensity of which depends on the position of the sun, the thickness of the ozone layer, the altitude and the weather conditions.

Depending on the wavelength of the UV rays, we differentiate between UVA (long-wave) and UVB (short-wave) rays, which penetrate the skin at different depths.

The skin has its own natural protection system to defend itself against these. However, the natural protection is limited and depends on the skin type, the existing level of tanning and the intensity of the sun (UV Index).

The natural protection is not adequate for excessive exposure to the sun and puts you at risk of sunburn. The energy of the UV light damages the skin cells and the skin becomes irritated, inflamed and red, or even forms blisters.

The natural protection of the skin is limited and differs from one individual to the next. If the skin's natural protection is no longer adequate, the solar radiation causes damage to the skin cells - this is known as sunburn. The symptoms of sunburn include reddening of the skin, itching, a warm sensation and swelling or blistering.

Even though the skin usually regenerates from sunburn within a few days, long-term damage remains. As a result, every episode of sunburn increases the risk of skin cancer and the skin becomes irreversibly damaged (e.g. accelerated aging of the skin). The use of sunscreen can protect the skin from this.

In 2017, Alpecin developed an innovative solution to prevent sunburn on the scalp, Alpecin Scalp Sun Protection. Due to the success of the product in the first year, it will be sold internationally this year. Therefore, the name of the product and the packaging have been changed. Both products contain the same powerful formula with sun protection factor 15 and therefore protect the scalp from sunburn and hereditary hair loss at the same time.

Sunlight is made up of a continuous spectrum of light that can be divided up into different types of radiation according to the wavelength, e.g. ultraviolet radiation (UV), visible light and infrared radiation (IR). UV radiation is further divided up into short-wave UVB radiation and longer-wave UVA radiation.

UVB radiation only penetrates the upper layers of the skin. However, it is very high in energy and excessive exposure can result in damage to the skin. Therefore, UVB radiation is mainly responsible for causing sunburn.

UVA radiation has lower energy than UVB radiation. However, it can penetrate deeper into the skin where it damages the cells and tissue. Very high exposure to UVA radiation can also cause sunburn and a greater risk of skin cancer.

"SPF" is the abbreviation for sun protection factor. The number indicates how much longer you can stay in the sun after applying a sun protection product before sunburn occurs. Your individual protection time depends on your skin type, the existing level of tanning and the intensity of the sun (UV Index).

When applying sun protection, no part of the body that is exposed to the sun should be forgotten. However, particularly sensitive areas, such as the scalp, the ears or the instep, are often forgotten.


Alpecin Scalp Sun Liquid has been developed so that it can be easily and evenly distributed over the scalp thanks to the special fluid galenic formulation. It is quickly absorbed. This ensures that the sun protection (SPF 15) can be adequately distributed over the affected parts of the scalp in order to provide protection from the sun.

Whether or not SPF 15 is sufficient depends on the individual skin type and the intensity of the sunlight.

Alpecin Scalp Sun Liquid can be applied to the scalp either when dry or moist. Roughly dry the scalp with a towel before application to ensure optimal distribution. Due to its special formula, the liquid can be spread easily and is quickly absorbed by the scalp.

It is recommended to apply Alpecin Scalp Sun Liquid before styling to ensure that it is thoroughly massaged into the scalp. However, it can also be applied to styled hair. Guide the opening of the bottle directly over the scalp before massaging in the liquid.

The more intense the solar radiation, the more generously and frequently the product should be applied to ensure the appropriate level of sun protection.

The caffeine absorbed by the roots of the hair and the scalp is perfectly dosed and is entirely safe, even for people who are sensitive to caffeine.

Alpecin Scalp Sun Liquid is suitable for every healthy scalp that is not irritated or injured in any way. (Not for children.)

The niacin contained in the caffeine complex improves the natural barrier of the skin and supports its moisture-binding capacity.

Thanks to the alcohol, Alpecin Scalp Sun Liquid is absorbed very quickly and effectively transport the active ingredients to the roots of the hair. The alcohol does not have any negative effects on the scalp or the hair. 

The yellowish colour that comes from the sun protection factor can stain textiles.

Alpecin Scalp Sun Liquid can also be used by athletes. It is quickly absorbed and, unlike many sun creams, is not greasy.