Daily intimate hygiene is often treated the same way as care for other parts of the body. However, the intimate area differs significantly in terms of structure, physiology, and microenvironment from the skin on the hands or torso.
While the use of traditional soap or harsh shower gels may be motivated by a desire for thorough cleansing, it can disrupt the natural pH balance and weaken the protective mechanisms of this sensitive area.
Proper intimate hygiene isn’t about stripping the skin of all its natural oils. Its goal is to maintain a natural balance. That’s the key.
The skin’s natural environment is slightly acidic—typically ranging from a pH of 4.0 to 6.0. This physiological pH is referred to as the skin’s acid mantle and serves an important protective function:
The genital area has an even more acidic environment, which promotes the stability of the microflora and hinders colonization by potentially pathogenic microorganisms.
Traditional bar soaps—which are salts of fatty acids—are alkaline, often with a pH between 8 and 10. Contact with such substances leads to a temporary increase in the skin’s pH, disruption of the acid mantle, and weakening of the protective barrier.
This may result in:
Many intimate health issues are not caused by poor hygiene, but rather by excessive hygiene or improper hygiene practices.
Strong detergents, such as SLS (sodium lauryl sulfate) and SLES (sodium laureth sulfate), effectively remove impurities, but at the same time strip away natural protective lipids and weaken the hydrolipid barrier.
This may result in:
Paradoxically, the more frequently aggressive cleansing products are used, the greater the discomfort tends to be. Excessive “sterility” can disrupt the local microflora and increase susceptibility to infections.
A formula designed for this area should:
✔ maintain an acidic pH
✔ contain mild cleansing agents
✔ support the microbiome
✔ prevent dryness
✔ have a soothing effect
Ingredients that are particularly desirable include:
Lactic acid – supports the skin’s natural pH balance and the stability of the skin’s microbiome.
Mild surfactants (e.g., glucosides, amino acid derivatives) – effectively cleanse without stripping the skin of its natural oils.
Humectants (e.g., glycerin) – prevent dryness.
Soothing ingredients (e.g., panthenol) – support comfort and regeneration.
Regular soap is not pH-neutral for the intimate area.
Its alkaline pH and strong degreasing properties can disrupt the natural balance of this area.
Daily intimate hygiene should be based on:
When skincare supports the body’s natural processes rather than fighting against them, comfort becomes a natural byproduct. This is very important.
Text: Dr. Tadeusz Oleszczuk
Bibliography:
[1]. Lambers H., Piessens S., Bloem A., Pronk H., Finkel P., “Natural skin surface pH is on average below 5, which is beneficial for its resident flora,” International Journal of Cosmetic Science, 2006 [accessed online on January 30, 2026].
[2] Gfatter R., Hackl P., Braun F., Effects of soap and detergents on skin surface pH, stratum corneum hydration and barrier function, Skin Research and Technology, 1997 [accessed online on January 30, 2026].
