Octyl Methoxycinnamate, a compound derived from cinnamic acid, is an organic UVB filter. UVB rays are the ultraviolet rays that cause sunburn and play a significant role in developing skin cancer. OMC has been primarily used in sunscreens and lip balms to absorb UVB radiation, thus protecting the skin from damage.

Octyl methoxycinnamate (OMC) is a chemical used in a variety of cosmetics for sun protection and other purposes: 

• Sunscreen: OMC is a chemical sunscreen that absorbs UV-B rays from the sun, protecting the skin from damage and sunburn. It can also help provide the appropriate Sun Protection Factor (SPF) in sunscreens. 

• Hair care: OMC can be used in hair care products to protect hair from sun damage. 

• Scar reduction: OMC can help reduce the appearance of scars. 

• Photo stabilization: OMC can act as a photo stabilizer, helping to protect colors and fragrances. 

• Water resistance: OMC can be used in non-aqueous water-resistant and waterproof sunscreen preparations. 

OMC is a synthetic compound that is photostable, meaning it retains its protective capacity even after being exposed to sunlight for extended periods. However, direct contact with the skin can bring certain risks, such as skin photosensitive reaction. OMC is also incompatible with potent oxidizing agents.