Advise clients to wear protective lotion with a sunscreen of at least:

When advising clients on sunscreen, it's crucial to emphasize the importance of using a product with an adequate sun protection factor (SPF) to effectively shield the skin from harmful UV rays. SPF measures how well a sunscreen protects the skin from UVB rays, which are responsible for sunburn and can contribute to skin cancer.

A sunscreen with an SPF of at least 30 is recommended by dermatologists and skin care professionals because it blocks about 97% of UVB rays, whereas an SPF of 15 blocks about 93%. This means that using a sunscreen with SPF 30 provides significantly better protection, particularly for clients who may have sensitive skin or are spending prolonged periods in the sun.

Those with skin conditions, a history of skin cancer, or those who spend extended time outdoors should prioritize higher SPF levels, such as 30 or even 50. This recommendation helps mitigate risks associated with UV exposure, reinforcing the importance of skin health and preventive measures.

Therefore, the correct guidance is to advise clients to wear protective lotion with a sunscreen of at least SPF 30 for optimal protection against UV damage.