No it does not leave marks but it can and it can hurt. The thing with laser is that it is energy and the laser is calibrated so that it hits the darker follicles or rather the energy is aborbed by them. It then travels to the follicle where there is a blood supply to the hair and it cauterises the follicle. If enough energy is absorbed it kills the follicle by cautery but if not then it may just damage it or miss completely. Damage will result in slower, finer regrowth but ironically if you damage it enough you will get a permanent hair that is harder to remove. The stronger, thicker and darker the hair the better the chance of full cautery.what happens if u miss? does it hurt? does it leave marks?
That is ablative laser. There are different lasers and they all depend on how they are calibrated in frequency, depth etc. Ablative is like CO2 which is what they use to resurface skin. It burns the skin to the dermis and forces a remodelling which in turn tightens the skin and causes a new, younger skin to form. Non-ablative lasers are used to penetrate but not take off the skin and they have various claims but I do not personally believe they are very effective for anti-aging. Many of the claims is that the "heat" penetrates deep and triggers the body to form more collagen deep within the skin. It works in all likelihood but it is not dramatic and for me such a subtle result is not worth the money they charge.i would have thought a laser would make microscopic burns and stuff.. and u know like force the body to heal?