Acidic and mildly abrasive; improper or prolonged use could dull or scratch some finishes.
Why
The manufacturer explicitly approves stainless steel, and the product is intended to remove mineral buildup and tarnish from it.
What to do
Apply to a wet surface or damp sponge, use briefly, rinse thoroughly within one minute, dry, and spot-test first. Avoid mixing with other cleaners.
pH
pH 1.75
Relevant chemistry
Ready-to-use liquid cleanser containing oxalic acid, citric acid, glass oxide abrasive, surfactants, glycerin, and fragrance. Do not mix with bleach, ammonia, or alkaline products.
Source: official product page ↗