The pH value is sometimes presented as a quick abbreviation for assessing a cosmetic. In practice, a broader context is needed: purpose, method of use and the entire recipe. It is not possible to determine the quality of a product or its compatibility with every area of the body from pH alone.
Destiny comes first
Start by knowing where the product can be used, whether it should be rinsed off and how much the instructions require. A body cosmetic does not become a preparation for mucous membranes just because the description contains a friendly pH. Restrictions and warnings on the packaging are equally important.
Don't guess values from INCI
The presence of citric acid or another recognized ingredient does not allow calculating the pH of the finished cosmetic. What matters are the proportions and the entire formula. If the manufacturer does not provide a result, mark the information as missing. Do not transfer value from a similar product or another fragrance version.
Compare declarations with the same scope
The information about pH does not indicate whether the product has a similar consistency, fragrance content or intended use. Don't create a ranking where a smaller or larger number automatically wins. A more important question is whether both declarations apply to products used in the same way and in the same place.
What to do if data is missing
Ask about the parameter for a specific version and the recommended method of use. Do not try to correct the finished cosmetic yourself by adding acid, water or any other preparation. The changed mixture is no longer the formulation described by the manufacturer. If you experience any discomfort, discontinue use rather than experimenting with proportions.
Check the dictionary
Sources and further reading
Sources help explain the topic; do not confirm the composition or action of a specific FEROSUP product.