I understand medicine for body weight, correct measurement proportions, but why shampoo? What happens when you turn 12 that you can suddenly use certain shampoos?
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Speaking about shampoo specifically, there is usually an age limit (12+) on certain shampoos due to the chemicals and additives used in the shampoo. The harsher chemicals and additives in adult shampoo are more likely to irritate the scalp and the skin around it in younger children (under 12).
That is the reason there is baby shampoo / children shampoo. These shampoos dilute their chemicals and additives to reduce the risk of irritation in a young child’s hair,eyes, or scalp. Baby shampoo also has a lower PH balance, usually 6-7 PH, which is considered about the same PH balance as your tears (7.4 PH). This is done to match a neutral PH balance to reduce the risk of stinging or burning if shampoo gets in the child’s eyes.
The “12+” direction for use of adult shampoo is there to make sure that parents aren’t using adult shampoos with potent chemicals and additives that can harm the child’s scalp,hair. or skin. The “12+” is more of a suggestion than a directional use of the product and is put on adult shampoos to cover them from potential law suits and liability if a child hurts themselves using that shampoo. In reality once a child has a healthy and full head of hair adult shampoo, if used properly, will not cause them any harm.
TLDR:
Shampoo for adults and children/babies are different. Adult shampoo has harsh chemicals and additives that can injure a child’s face, hair, scalp, and skin. Baby shampoo uses diluted chemicals and additives to prevent these injuries. 12+ is a suggestion by shampoo companies to cover themselves if a young child injures themselves using adult shampoo.
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