Why do I need to have a course of laser hair removal? Why can it not be treated, in a single session?

Why do I need a laser course is part of the main Laser Hair Removal Guide, you might like to begin there.

Anagen, Catagen, Telogen the three stages of hair growth

In one single treatment, sixty to ninety percent of the hair in the anagen only stage of the hair growth cycle is successfully treated.

How it affects laser hair removal

This is why you need to have a course of treatments, to eventually reach the majority of the hair growth. Do not think of it as permanent hair removal, think of it as permanent hair reduction. To date, there is not a treatment for the permanent complete hair removal, so do not be mislead by any clinic who tells you otherwise.

Hair growth cycle and Fitzpatrick skin type classification

Location Telogen
(months)
Anagen
(months)
Total
(months)
Back 3-6 3-6 6-12
Thigh 3-6 3-6 6-12
Arm 3-5 1-2 4-7
Calf 3-4 4-5 7-9
Axilla 2-3 3-4 5-7
Upper Lip 1-2 3-4 4-6
Bikini 3-4 2-3 5-7
Hair cycles at varying times, thus frequency of sessions varies.
Type I Always burns, never tans *
Type II Always burns, sometimes tans *
Type III Sometimes burns, always tans
Type IV Rarely burns, always tans
Type V Moderately pigmented
Type VI Black skin
Fitzpatrick classification of skin types.
* Denotes Irish Skin

Each and every one of us is different. Therefore we each react, differently to the treatment. Some people notice a reduction after one treatment, however generally it is after the third or fourth treatment before you see a noticeable difference. Initially, you will see the hair grows back slower after each treatment as the treatment slows down the hair growth.

Then you will notice the hair growth grows back patchy. You will need a course of treatments. Sold in varying course sizes typically three or six sessions. The average is six to ten treatments. However, some people often need up to ten or twelve treatments.

I hope this has helped explain why you need multiple visits for your hair removal. If you have any questions we would be happy to help.

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Emma Ryall
Educator, Proprietor, Aesthetician at Zest Skin Clinic & Laser Hair Removal
Licenced Aesthetician, CIBTAC, ITEC and CIDESCO accredited professional therapist with over 14 years industry experience, specialising in skincare. Emma is also a master trainer City & Guilds – Accreditation No: 500/5753/4

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