Hair is more likely to break when wet than when dry.Precisely because of this, imposing mechanical force when combing it at this time can cause permanent damage.“The hair shaft has elastic properties, allowing it to stretch and return to its normal configuration. When wet, the hair shaft can be stretched to 30% of its original length without suffering damage, but irreversible changes occur when it is stretched to between 30% and 70% of its original length,” explains the expert. In other words, pulling the strands excessively, dragging the knots, breaks the strands.

There are flat models, which dont accumulate water and are great for spreading creams, as well as flexible ones, which adapt to movement and are ideal for curly, frizzy or very fragile hair...​