Tweezing causes stronger hair growth. By pulling out the hair from the root, stronger hair growth is encouraged by the stimulation to the capillaries found at the base of each follicle. Also, tweezing can create distorted hair follicles, causing ingrown hairs. Also, people with darker skin tones can sometimes experience hyperpigmentation which involves darkening of the skin.
Waxing is the similar to tweezing but on a larger scale. In addition to removing unwanted hairs, you also remove the fine (vellus) hairs in the treated area. Waxing encourages stronger hair growth and could stimulate fine hairs to grow back darker and courser. This method may also cause ingrown hairs.
Shaving cuts off the fine pointed tip of the hair and leaves the hair level with the surface of the skin. When the hair grows out, the blunt edge (stubble) can be noticeably felt. Contrary to popular belief, shaving does not contribute to an increase in hair growth or create a thicker hair.
Bleaching changes the color of the hair to make it less noticeable. This method removes the natural elasticity of hair and the chemicals within these products can irritate the surface of the skin.
Threading is a method of removing hair by using a cotton thread which is pulled along unwanted hair in a twisting motion, trapping hair in a mini lasso, and lifting hair out of the follicle. This method can have the same side effects as tweezing and waxing.
Laser treatment is very expensive and repeated treatments are not uncommon. This method is FDA approved for hair reduction. Laser hair removal is not recommended for people with fair and gray hair or people with darker skin tones. Also, laser cannot be used to treat eyebrows.