Bleach: Place stained silicone products in water containing oxygen bleach to try to remove the stain. Be sure to follow the instructions for using the bleach and test it on a small area before handling to ensure it won't negatively affect the silicone.
Alcohol or acetone: Using an organic solvent such as alcohol or acetone may help remove staining. Dampen a soft cloth or cotton ball with alcohol or acetone and gently wipe the affected area. Before use, make sure to test in an inconspicuous place to avoid further damage.
Sunlight Bleaching: By placing stained silicone items in the sun, natural light and ultraviolet rays from the air may help fade the stain. This process may take some time, so be patient.
Professional Silicone Cleaners: Some professional silicone cleaners or cleaning solutions may be effective in removing staining. Please read the cleaning instructions carefully before use and follow the correct operating procedures.
Mechanical abrasion: For surface stains, gentle mechanical abrasion may help remove the stain. Use a gently abrasive object such as fine sandpaper or an eraser, but be careful not to scratch the silicone surface.
Consult the manufacturer: If the above methods do not work, it is best to consult the manufacturer of the silicone product. Manufacturers may provide cleaning recommendations specific to their products and may offer you a better solution.
Before performing any cleaning or treatment, be sure to test the effectiveness of your chosen method to ensure no additional damage is caused. The resistance of silicone products can vary between manufacturers and product types, so it's best to check the product instructions or contact the manufacturer for advice before cleaning.
