3% hydrogen peroxide is a mild and commonly available solution composed of 97% water and 3% hydrogen peroxide (H2O2). The 3% concentration is considered safe for household use and has a wide range of applications. 3% hydrogen peroxide can be used as a non-toxic and environmentally friendly cleaner for surfaces such as countertops, cutting boards, and bathroom fixtures. It's important to note that while 3% hydrogen peroxide has numerous household uses, it should not be ingested or used in higher concentrations without proper guidance from a healthcare professional. Additionally, it should be stored in a cool, dark place as exposure to light can break it down into water and oxygen, rendering it less effective over time.