Short answer: Clobetasol is a much more potent topical steroid than mometasone. That means it works faster/stronger but carries higher risk of thinning skin and other side effects. Mometasone is less potent and generally safer for longer use or on more sensitive areas.
Side-by-side
- Potency
- Clobetasol propionate 0.05%: very potent (super-potent)
- Mometasone furoate 0.1%: high-potency, but less strong than clobetasol
- Common uses
- Clobetasol: for severe, thick, resistant inflammatory skin conditions (e.g., plaque psoriasis, lichen planus, severe eczema) on non-face areas. Usually for short courses.
- Mometasone: for milder to moderate inflammation (eczema/dermatitis, some psoriasis, scalp/dermatitis) and when you need a longer course or are treating larger areas.
- Where to use and cautions
- Clobetasol: avoid use on face, groin, armpits, and large areas unless directed; not for long-term use, especially in children.
- Mometasone: can be used on many body areas but still use the lowest effective amount and avoid prolonged use in children; less risky than clobetasol but can still cause thinning with long use.
- Safety and side effects
- Local: skin thinning, stretch marks, pigment changes, irritation; both can cause these, but risk is higher with clobetasol.
- Systemic: absorption can affect the HPA axis, especially over large areas or with improper use; higher risk with clobetasol.
- Formulations and availability
- Clobetasol: available as ointment, cream, lotion, foam, etc.—usually prescription-only; very potent so used for short periods.
- Mometasone: available in various forms (cream, ointment, lotion, spray/foam) and often prescribed for longer courses; still prescription in many places.
- Special populations
- Pregnancy: use any potent steroid only if clearly needed and under a clinician’s supervision.
- Children: be especially cautious with potent steroids; limit area and duration.
Bottom line
- Use clobetasol only for short, targeted treatment of severe disease and under supervision.
- Use mometasone when you need effective control but want a safer, more tolerable option for longer use or on more sensitive areas.
- Always use the lowest effective potency for the shortest possible duration.
If you tell me the exact condition, the area of the body, and age, I can tailor more specific guidance (typical choices, duration, and what to watch for).