Related Experiment Video
Updated: Jun 19, 2026

Using a 1064-nm Picosecond Neodymium-Doped Yttrium Aluminum Garnet Laser for Periorbital Hyperpigmentation
Published on: May 23, 2025
Axillary hair removal with 1064-nm Nd:YAG laser increases sweat production
F Aydin1, G S Pancar, N Senturk
1Department of Dermatology, School of Medicine, Ondokuz Mayis University, TR-55139 Kurupelit, Samsun, Turkey. bennet@mynet.com
Background:
Laser-assisted hair removal has become a popular treatment for eradication of body hair. Many studies have been published concerning the safety and efficacy of several laser systems. Adverse events are hyperpigmentation, hypopigmentation, erythema, oedema, scarring, pain and blistering. Changes in sweating have not previously been reported.
Aim:
To investigate the effects on axillary sweating of hair removal by a 1064-nm neodymium:yttrium-aluminium-garnet (Nd:YAG) laser.
Methods:
The sweating function of both axillae was evaluated objectively by the iodine starch test for planimetry measurement and subjectively using a visual analogue scale (VAS) before the treatment, and 1 month and 1 year after the last session.
Results:
The difference in hyperhidrotic activity before and after treatment was significant (P < 0.05), and these differences persisted 1 year after the last evaluation.
Conclusions:
The results of this study confirm that treatment of axillary hair using the 1064-nm Nd:YAG laser can cause hyperhidrosis, and this effect is not transient. We did not evaluate the eccrine glands histologically, which is a limitation of the study.
Related Concept Videos
Accessory Structures of the Skin: Sweat Glands
Sweat glands are classified as merocrine glands; that is, the secretions are excreted by exocytosis through a duct without affecting the cells of the gland. There...
Body Temperature
Accessory Structures of the Skin: Hair and Hair Follicles
Hair is a keratinous filament growing out of the epidermis. It is primarily made of dead, keratinized cells. Hair strands originate at the epidermal penetration called the hair follicle. The hair shaft is the part...
Assessing Body Temperature - Axilla
Step 1: Perform hand hygiene and put on clean gloves to maintain infection control and prevent cross-contamination.
Step 2: Prepare the patient by explaining the procedure to ensure understanding and cooperation. Ensure privacy, expose the axilla, and inform the patient that minimal movement is crucial for an accurate reading.
Step 3: Adjust the patient’s clothing to expose only the axilla. It minimizes...
Thermoregulation
Accessory Structures of the Skin: Hair Growth and Types
