I so far have not come across anything in regards to this.
My arm hair grows funny from the years of epilating. I've had 5 laser treatments which has eliminated a lot of the hair. I wish what was left would grow in one direction and close to the skin (as untouched arm hair does) but the damage as been done.
My sister on the other hand, never removed or shaved her arm hair pre-laser. She's had 3 treatments so far and the little hair that has grown back since the last treatment is still growing like it was before.
for reduction on Underarms, Bikini, Full Legs & 3/4 Arms. Skin type IV
Electrolysis - Further details in: My sister's electrolysis diary
[27hrs of Blend, April 2008-Dec 2010 in UK, for coarse hair on lower sideburns, coarse chin hair, completed upper lip, shaped eyebrows]
[Sept 2011 to date, once yearly sessions with Josefa. Completed reduction of facial/neck fuzz in approx 27 hrs TTT]