Red light at greater wavelengths can penetrate even your bones and joints because your skin doesn’t absorb them as quickly as it absorbs light at 630nm or 660nm. As a result, you feel the heat coming from within instead of spreading from your epidermis. This is perfect for those who have low tolerance to heat.

Blue wavelength is one of the shorter wavelengths in the visible light spectrum and is commonly used in blue light therapy. This therapy has been shown to be effective in treating various skin conditions, particularly those related to the outer layers of the skin.

Blue light therapy works by targeting and killing the bacteria that cause acne breakouts. It penetrates the skin and reaches the sebaceous glands and has also been used to address other skin concerns such as psoriasis, eczema, and sun damage. It can help to decrease inflammation, promote healing, and improve the overall health of the skin.