A direct manufacturer prohibition overrides general compatibility inference.
Use a cleaner specifically approved for this material.
pH 1.75
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.
Do not use Bar Keepers Friend Soft Cleanser on marble. Bar Keepers Friend explicitly says it does not recommend Soft Cleanser on marble, while the product contains oxalic acid, citric acid, and a glass-oxide abrasive.
Bar Keepers Friend says it does not recommend Soft Cleanser on marble surfaces. The Soft Cleanser product page lists oxalic acid, citric acid and glass oxide abrasive among the ingredients.
Bar Keepers Friend — FAQ ↗The Natural Stone Institute explains that marble is calcium-carbonate based, recommends mild non-acidic cleaners, and warns that acids can etch marble while abrasive creams can scratch some stones.
Natural Stone Institute — Care & Cleaning ↗This is not just a generic caution. The manufacturer advises against using this product on marble, and the formula combines acidic ingredients with an abrasive. Marble is vulnerable to both acid etching and surface scratching, especially when polished.
Rinse the surface thoroughly with clean water and dry it with a soft cloth. Do not keep scrubbing a dull or hazy area. If a visible dull patch remains after drying, the finish may have been etched or abraded and may require professional refinishing.
Use a pH-neutral cleaner intended for natural stone or another cleaner specifically approved for marble. Bar Keepers Friend itself points marble users to its pH-balanced Granite & Stone Cleaner & Polish instead of Soft Cleanser.
For Marble, the available evidence points against using Bar Keepers Friend Soft Cleanser. The prohibition or credible damage mechanism described above is stronger than a general-purpose cleaning claim, so a surface-approved alternative is the safer choice.
Evidence scope: exact product. The compatibility record is tied to manufacturer evidence identified for this specific cleaner.
See other cleaners checked for Marble