Hi.. I `ve only recently gotten my hands on `Got2B`...used it a few times.. gives a strong hold but won`t stand up to heavy sweating....I think Xeon uses it a lot so I`m sure he`ll chip -in here, but I can`t see how a hair-gel [ a very strong one ] would have any negative effects on your growing hair..... obviously I cannot give you a definitive answer but if it`s formulated for hair and it`s commonly-used, I can`t see why it would give you any problems at all....... I sure wouldn`t have sat there and allowed someone to be so rough with my system/head...... you`re paying your money and have a right to be dealt with properly....would she tear out her own hair ? Hardly ! I think people have had more `reactions` to glues or more precisely, supertape, than to anything such as `Got2B`...... I can`t recall anyone ever posting any negative things about it. Hope that`s of some help.. regards, Paul.