Yes, clippers can be used without guards, but it's essential to exercise caution. Clippers without guards allow for very close cuts, often called "bald fades." When cutting without guards, be extremely careful to avoid any direct contact between the skin and the clipper blade to prevent cuts or irritation. Clippers without guards are commonly used for detailed work, outlining hairlines, and creating sharp, clean edges. However, for most haircuts, using guards provides more flexibility and safety in achieving various hair lengths.