Based on this product's specifications, here are some alternatives and similar models
Diffusion Filter K&F CONCEPT HD White Diffusion for 55 mm lenses (55mm) KF01.2114
Summary description:
K&F CONCEPT HD White Diffusion is a diffusion (softening) filter designed for lenses with a 55 mm thread. The filter produces a soft, glow-like effect by diffusing highlights and reducing contrast to smooth skin tones and create cinematic atmospheres. It suits portrait, wedding, fashion and video work where subtle softening and gentle highlight bloom are required.