Chemical Sunscreens

Chemical sunscreens contain organic (carbon-based) compounds, such as oxybenzone, avobenzone, octisalate, octocrylene, homosalate, and octinoxate, that absorb UV radiation and convert it into heat, which is then released from the skin. These ingredients contrast with physical (or mineral) sunscreens, which use zinc oxide and titanium dioxide to physically block UV rays.

Potential Risks:

1. Systemic Absorption: Studies have shown that certain chemicals in sunscreens can be absorbed into the bloodstream. The effects of this absorption during pregnancy, particularly on fetal development, are not fully understood.
2. Endocrine Disruption: Some ingredients in chemical sunscreens have been linked to endocrine disruption. Compounds like oxybenzone can mimic hormones, potentially leading to developmental and reproductive issues.
3. Allergic Reactions: Pregnant individuals may experience heightened skin sensitivity, increasing the risk of allergic reactions or dermatitis from chemical sunscreen ingredients.

Regulatory Stance:

• While most chemical sunscreens are approved for use by major health organizations, the debate around certain ingredients like oxybenzone has led to a call for more research, especially regarding their use during pregnancy.

For those concerned about chemical sunscreens:

• Physical (Mineral) Sunscreens: Zinc oxide and titanium dioxide provide effective sun protection without the risk of systemic absorption and are considered safer options during pregnancy.
• Sun Protective Clothing: Wearing hats, long sleeves, and UV-protective clothing can significantly reduce UV exposure without the need for sunscreen.
• Seeking Shade and Timing Outdoor Activities: Limiting sun exposure during peak hours (10 a.m. to 2 p.m.) and seeking shade can also help minimize the need for extensive sunscreen application.