Plausible benefits
Tallow can soften skin, reduce the feeling of dryness, and create a protective layer that slows water loss. That makes it most relevant for dry or rough skin.
Claims to treat carefully
Claims about acne clearing, eczema treatment, scar fading, wrinkle reversal, and collagen production are not established by the same evidence as basic moisturizing benefits.
How to try it
Apply a rice-grain to pea-sized amount over damp skin at night. Patch test first and stop if you notice burning, clogged pores, rash, or worsening irritation.