the "magic can" contained liquid nitrogen and is one of the oldest and often highly effective treatments for sunspots warts and other skin issues. it is also one of the least expensive of the treatments dermatologists offer to remove sunspots. there is a risk that all the pigment may be removed as the skin heals and that can leave a white spot at the site of treatment and that is permanent so it does need to be done carefully and you do need to be aware of the risks. the blue peel is effective for some people but usually not if the spots are raised or have any depth to them. laser peels are highly effective but must be done by a qualified trained aesthetic physician (dermatologist/plastic surgeon).
i am 65 and concerned about the sun spots on my face. will a blue peel remove these spots and even out my skin tone? . would it be more effective to have the spots removed with a laser? several years ago while visiting my dermatologist i mentioned the dark spot on my face and hands and he sprayed something on me. the area turned brown scabbed over and a week or so later spots were gone. do you have any idea what might have been in that “magic can”? i would ask him but he has retired.