Detailed answer

Allergies to skincare products do not cause birth defects. Birth defects are typically caused by genetic abnormalities, exposure to certain medications or toxins during pregnancy, or other environmental factors. Allergies to skincare products may result in skin irritation, rashes, or allergic contact dermatitis, but they do not have the potential to cause birth defects. However, it is always recommended to consult with a healthcare professional before using any skincare products during pregnancy to ensure their safety.