 [ Symptoms ] are antiperspirants harmful for a 10 year old girl i heard they lead to early puberty and are not good for kids [ Disease ] any child boy or girl going through signs of early puberty will most likely need antiperspirant and a deodorant it is not harmful and it will not change her maturation rate in any way buy her some and encourage frequent showers and changes of clothes when my grand daughter was this age the teacher sent home a note suggesting deodorant antiperspirants so it is better if this comes from you as a matter of fact she was thrilled knowing that she was starting puberty she did not know that stink often is the hallmark sign