Applying personal care products, such as sunscreen, can lead to inhalation of harmful chemicals like ethanol and volatile organic compounds (VOCs), which may cause skin irritation, headaches, and respiratory issues. Personal care products often contain undisclosed fragrance compounds that can trigger health problems. Essential oils, commonly found in "natural" products, can also release toxins and react with other chemicals to form harmful byproducts like formaldehyde. Beauty salons pose high risks due to VOCs, emphasizing the importance of proper ventilation. To minimize exposure at home, ventilate spaces when using these products.