I HAD shoulder length hair and had to cut it after removing micros due to damage. I have read that micros work better on shorter hair. I also had wavy extensions. The braider will usually braid your hair along with the extension hair then tie a knot in it and leave the rest hanging. That's where the danger comes in when you have longer hair. Make sure that your braider braids well past your natural hair before tying the knot so you won't have to cut your own hair when removing the braids. Also, I would not go to anyone who uses any type of glue (like nail glue) to secure the braids. Some braiders like to use gel to make the braids appear neater. I opted not to do this. If you do, bring your own gel that does not dry out the hair (Elasta QP Glaze, Let's Jam, IC with sparklites). Finally, watch your hairline. If it is damaged, DO NOT get micros. Those tiny sections of hair can not withold the stress of a braid being attached to it. It is also a good idea not to wear your braids pulled back a lot, as this adds extra stress to the hair line.
I am not saying not to get them, but I had a really bad experience with them. I basically had to cut and start my hair journey over. I won't get micros again. You may want to try larger braids to be on the safe side. HTH!
