Ultraviolet and Violet Light Therapy
UVA and UVB light therapy uses exposure to light ultraviolet wavelengths of 340 nm to 400 nm (UVA) and/or the shorter ultraviolet wavelengths of 290 nm to 320 nm (UVB). There are many reasons that this type of phototherapy is currently used. The first is that it can help to enhance the production of vitamin D by the body. Vitamin D deficiency can lead to a number of different health concerns and yet many people are not receiving enough light exposure to be able to produce adequate amounts for optimal health. Therapy using these wavelengths can help to correct that problem. For UVB light therapy products for vitamin D production we recommend this light by Sperti. Full body tanning beds for Vitamin D light therapy are available from a different seller here.
Ultraviolet light therapy has also been used to treat a number of skin issues such as certain forms of inflammation, and conditions such as psoriasis, alopecia areata, atopic dermatitis, mycosis fungoides, urticaria, and even stretch marks.
Violet Light Therapy
Violet wavelengths range from 410nm-450nm or so. Violet light therapy is commonly folded under the antibiotic use of blue light therapy. For example, 415nm, which is violet, is called “low level blue” in studies related to acne light therapy.
For articles about the therapeutic use of violet light therapy, please check under blue light therapy.