Blog March 2022 

Mistaken Regrowth After Laser

A lot of regrowth after laser hair removal can be very disheartening, and you might even feel that the treatment isn’t working for you and maybe even give up.

Any new hairs that appear during treatment are usually NEW cycles, which is good because it means we're targeting hairs that weren't in the growth phase at your previous appointment. Here we will cover the types of hair growth that can often be mistaken as regrowth after laser hair removal.

the hair growth cycle brighton

Telogen (resting) Phase

Laser hair removal is ineffective during this phase because the hair is fully detached, and the laser can’t reach the follicle to destroy it. The follicle becomes dormant until a new anagen hair develops, and a new growth cycle will begin. As this new hair grows, it will push the old hair up and out of the skin. This can often be mistaken as regrowth from previously lasered hair.

Empty Follicles & hidden hairs

During the resting phase, some follicles will be empty, and some will have new hairs (early Anagen hairs) hidden under the skin. Concealed hairs will surface a few days after your laser treatment, and the inactive follicles will produce new hairs over the next 3-4 months. These hairs were never treated with laser but can be mistaken as regrowth.


If you are shaving between laser appointments, you may find that many of the slow-growing telogen and catagen hairs are entirely invisible, and you only see the fast-growing anagen hairs.

Even after shaving, the telogen hairs will sit at skin level until a new fast-growing Anagen hair is produced and shows a false regrowth.
If you’re unsure, we recommend you stop shaving between appointments. Shaving doesn’t affect your treatment, but it may hide the actual amount of hair you have.

Tweezed, plucked, or waxed hairs.

This hair removal method disrupts the cycle as the hairs are forced out, and the follicles take time to heal before generating new hairs. We recommend waiting at least six weeks after this type of hair removal before starting laser hair removal and avoiding tweezering or waxing during treatment.

Medical conditions

Sometimes an underlying medical condition can be the cause of new or rapidly growing hair. Many imbalances can cause vellus hair to turn into terminal hair. PCOS or changing/stopping birth control pills are common culprits, as well as Menopause, and surgical removal of the ovaries can also impact hair growth.

True Regrowth

This can sometimes look like stubble growing or ingrown hairs as your body pushes the hair out of your skin. You can speed up this process and help “stuck” hairs by gently exfoliating the area.

If you are concerned about regrowth after laser hair removal or have any further questions, please get in touch with one of our laser specialists

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