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How Deep Do Theradome Lasers Penetrate to Stimulate Hair Follicles?

Light Penetration of Theradome

How does the light from the Theradome stimulate hair growth?  A healthy terminal hair's base sits between 3 and 5 millimeters below the surface area of the skin. Laser light reaches this depth to stimulate damaged cells, thus enabling miniaturized hairs to begin growing again.

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Updated on 29 Dec 2025