Dryer sheets are typically designed to be used in conjunction with the heat and air movement provided by a clothes dryer. When used in this manner, they can help reduce static cling, add a pleasant scent, and potentially soften fabrics.
However, when dryer sheets are used without heat or air conditioning in a dryer, their effectiveness in softening fabrics may be limited. The primary purpose of dryer sheets is to release a thin layer of fabric softening agents and lubricants onto clothes, which are then activated and distributed during the drying process with the combination of heat and air movement.
Without heat or air conditioning, the dryer sheets may not have the opportunity to fully distribute and release these softening agents onto the fabric. As a result, the fabric may not experience the same level of softness that it would when dried with heat and air circulation.
If you're unable to use a dryer or prefer not to use heat, alternative methods for softening clothes include using liquid fabric softeners during the washing cycle, utilizing vinegar as a natural fabric softener, or using wool dryer balls to help soften and reduce static cling.