From what age is this shampoo-conditioner suitable for children?

The manufacturer indicates this product suits children from preschool age upward. For toddlers under 3, the main considerations are: the fragrance is a noticeable strawberry ice cream scent, which some very young children may find overwhelming or which could irritate sensitive scalps; the 2-in-1 format means the conditioning agents stay on the hair briefly during rinsing, so if your child has cradle cap, very fine baby hair, or a known sensitivity to leave-on ingredients, a dedicated baby shampoo without conditioning agents may be gentler. Always do a patch test on a small area of the scalp or behind the ear before full use, especially if the child has atopic dermatitis or a history of reactions to scented products. If the child is under 3 and you're unsure, consult your pediatrician or a pediatric dermatologist before introducing a fragranced 2-in-1 product.