Fluticasone + Mometasone (nasal steroid)

Topical preparations — 10% body surface area rule

Topical preparations are treated as acceptable only while applied to no more than 10% of body surface area (roughly one arm, or the palm-size rule ×10). Above that, systemic absorption becomes significant and the preparation is assessed as if taken systemically — including topical corticosteroids, NSAID gels and antihistamine creams. Broken or inflamed skin increases absorption further.