I’ve always treated with the Nd:YAG (there are 2 of my cases on this site under Hemangioma).
If using Erbium use a small tip.
A few drops of LA. approach from lingual aspect of hemangioma. Need to create drainage and destroy enough of the Venus Lake so it won’t be able to refill, before the body can destroy. After entering the lesion, it should bleed, let drain, then re-enter and lase internal walls. Lasing less than a minute. There will be some post-op swelling, look ugy, but heal without scarring in about 3 weeks.
Current issue of ESOLA shows complete ablation with CO2 of similar cases, looks like overkill to me.
Jeff