Glow with health using violet rays (1920 ish, through to 1960's)

Another quack cure from the early / mid 1900's. You can find them still in antique markets. It seems to be a UV light wand. UV light is harmful to eyes and can be carcinogenic, causing skin cancers. There are a few skin conditions that spot UV is used to treat today, but most of this ad is harmful quackery!

The ailments the wand claims to cure:

• Asthma
• Boils
• Blackheads
• Catarrh
• Colds
• Eczema
• Failing Hair
• Hayfever
• Headaches
• Insomnia
• Lumbago
• Nervousness
• Neuralgia
• Paralysis
• Pimples
• Rheumatism
• Skin Diseases
• Sore Throat
• Other ailments