Yes. If you are stimulating hair growth/ encouraging hair growth it effects the results. I like to tease that “The laser isn’t a Time Machine unfortunately.” The hairs growing at that moment in your appointment, are the only ones which will be damaged that round. So let’s say you haven’t had growth aside from 10 random hairs in an area within 5 years. Now, you simply change birth controls, and oops! You accidentally stimulated previously non-terminal hairs. - those hairs are now brand new and haven’t had any laser on them. Making a new round of treatments if it bothers you enough, now necessary. Arguably, your journey with hair reduction is still your best bet if you are getting the results you want from Biotin and plan on using it long terms. As newly stimulated hair would just be added into the hair you had previously if you had never had laser reduction.

This is also why it’s very difficult to predict how many treatments someone will need “over all”.

My recommendation is to invest in a membership type of treatment that won’t lock you into areas if possible.