The liquid texture is the selling point. Most zinc sunscreens are creams. This is a genuine liquid, which spreads far thinner than a cream can and is a large part of why it feels weightless.
The sheer tint is there to fight the cast. Zinc oxide reads white; a universal cosmetic tint optically cancels some of it. The brand's own testing claims most users see no visible cast after blending.
Zinc-only, non-nano, and made for sensitive skin. It is a reasonable pick for rosacea-prone and reactive skin that cannot tolerate chemical filters.