The Concerns Surrounding Oxybenzone in Sunscreens
One of the primary concerns associated with modern sunscreens revolves around the inclusion of oxybenzone. Oxybenzone is a commonly used ingredient in sunscreens that rely on chemical blockers. Some studies have suggested that oxybenzone may disrupt hormones in rats, leading to potential health issues. However, according to Dr. Jennifer Lin from Harvard Medical School, it would require approximately 277 years of consistent sunscreen use for a human to accumulate oxybenzone levels that could be problematic, similar to those observed in rats.
Another significant concern is the potential harm that oxybenzone in sunscreens can cause to coral reefs when it washes off swimmers’ bodies. This concern is supported by substantial evidence, leading certain regions, such as Hawaii, to enforce bans on the use of this ingredient in sunscreens to protect their delicate marine ecosystems.
Skin Absorption: Debunking the Myths
There is a common concern among many people regarding the potential for sunscreen to penetrate the skin and enter the bloodstream. However, extensive research has shown that sunscreen only permeates the uppermost layers of the skin and does not seem to be absorbed into the body at a deeper level. It is important to note that aerosol sunscreens present a separate risk – inhalation. Although the small amounts inhaled during regular application do not appear to be harmful, experts recommend applying spray sunscreen in a well-ventilated area. Additionally, it is advisable to spray the sunscreen into the hand first before applying it to the face and neck.