The name of a cosmetic form, usually associated with a light or concentrated formula for a specific stage of care. There is no single composition common to all products called serum. It may be an aqueous, oily or emulsion preparation. The name itself does not guarantee greater effectiveness than the cream; what matters are the ingredients, the area of application and the way of combining it with other care.
Name of the care step
The serum does not have one mandatory recipe or concentration common to all products. It may take the form of a solution, gel, emulsion or oil mixture. The differences affect the order and convenience of use. A light feel is not evidence of low ingredient content, just as density is not evidence of a stronger effect. When arranging care, it is worth determining what task a specific product should perform, instead of adding another layer just because of the name of the serum.
The order of use should result from the instructions and the type of medium, not the word serum itself. An oil product behaves differently than a water gel. When introducing new products, it is worth observing one preparation at a time, which makes it easier to recognize its effect and possible intolerance.
Meaning and application
Serum is the name of a type of product, not a guarantee of higher concentration or stronger effect. Before you add them to your routine, define the expected purpose: a different consistency, a specific function or a more convenient method of application. Check the declaration of the finished formula.
In practice
Compare the purpose of the serum with the cosmetics you already use. Read the order and frequency of use provided by the manufacturer. Introduce the new thing separately to distinguish tolerance from reaction to several simultaneous changes.
Don't arrange the order of cosmetics only according to the slogan: the rarer, the earlier. The instructions for different preparations may vary. Don't use pinching as confirmation of effectiveness; if an adverse reaction occurs, discontinue use and evaluate the situation.