使用流程
Natural Beauty does not regenerate, reshape, patch, or blur the portrait. It needs one complete, near-front face: the face is checked carefully, its full shape is mapped, and its skin is separated from hair, beard, body, clothing, accessories, and background. It works in exactly three broad but bounded skin zones across the forehead and both cheeks, while slightly enlarged protective areas keep the eyes, irises, eyebrows, nose, and lips untouched. Each correction is measured against the surrounding skin only, so nearby background, hair, or beard color cannot bleed into it. Only medium-sized patches of uneven tone and color are reduced; fine detail and natural pore texture are kept. Even at full intensity, each brightness and color correction is capped at a small fixed amount. Face shape, expression, protected features, hair, beard, clothing, lighting, background, framing, transparency, and every pixel outside those zones are copied unchanged into a lossless PNG. Side profiles, incomplete or tiny faces, unclear skin, and anything covering too much of a zone are refused. Skin that is already even is returned unchanged rather than processed for no reason.
