been taking biotin supplements as a part of my transspecies transition plans for about 5 months now and honestly, my claws look and feel great!!! they've only really started growing very long in these past two months, but they're much stronger than they used to be and they're much less susceptible to peeling and flaking. and they're very sharp!!!! i've scratched myself a few times on accident lol.
the first two images were taken today, and the third image was taken about a year and a half ago. i wasn't really ever able to grow them much past that length in the third image due to peeling, bending and flaking.
granted, i've also been trying a bit more to take better care of my claws, but you can kind of see the difference in thickness and especially the difference in my cuticles! i've also tried to now file my nails instead of cutting them with clippers, because i've heard that's better for them.
also, for anyone else wanting to try taking biotin supplements: my dosage is 5000mcg, 3 times a week (not every day!) (disclaimer: i am not a doctor, see what works for you or contact a professional!)
anyway, sorry for the rambly post! i hope this information helps some of you critters :3