What is a key reason for clients to be informed about their medication effects on tanning?

Clients must be informed about how their medications may affect tanning primarily to evaluate possible side effects during tanning. Certain medications can have photosensitivity effects, which might lead to adverse reactions, such as burns or rashes, when exposed to ultraviolet (UV) light from tanning beds or the sun.

Understanding the interaction between medications and tanning is crucial for the safety and comfort of clients. By being aware of these potential side effects, clients can make informed decisions about their tanning sessions, helping to mitigate risks and ensuring a safer tanning experience. Consequently, proper communication about medication effects allows clients to enjoy their tanning without unexpected or harmful reactions.