Which treatment is effective with least side effects for hair removal on face & other parts of body. electrolysis or laser?which type of laser is best

Hair removal: It depends on hair color & skin type. Lasers are very effective for hair reduction (hair isn't actually removed, just miniaturized to where it doesn't show about skin surface) in the hands of a properly trained and experienced dermatologist or plastic surgeon. Gray, blond or red hair does not respond to laser treatment. Proper laser must be used for correct skin type which is determined before tx.