Can I use this gel on my face, neck, or other sensitive areas?

The product information explicitly states that river sponge gels are not a good match for very sensitive, irritated, or damaged skin. The face, neck, décolletage, and inner arms have thinner stratum corneum and more nerve endings, so the stimulating effect of the sponge particles is amplified there. If you still wish to try it on the face, do a patch test behind the ear or on the jawline first: apply for 30 seconds, rinse, and wait 24 hours. Only proceed if there is no lingering redness, itching, or barrier disruption. Avoid the eye area entirely — the particles can cause mechanical irritation if they migrate into the eyes. Do not apply on active breakouts, rosacea-prone zones, eczema patches, sunburn, or recently exfoliated skin (including after chemical peels or retinoid use). If you are using prescription topicals (e.g., tretinoin, topical antibiotics), consult your dermatologist before adding this gel to the same routine. For body areas with thicker skin — thighs, lower back, upper arms — the gel is generally better tolerated.