that's easy!....you don't! you'll never get it back to white
Mr. Clean Magic Erasers are really like magic for taking off scuff marks. You just wet it and scrub a bit. It won't help if the plastic is scratched though.
Blackboard
neither. The color does not effect it.
yellow
If the screen is actually white, it will absorb all light and appear black to your eye. If the screen appears white in normal light, all light will be reflected resulting in the combination of green and red (brown/yellow).
Try using oxy clean powder this may work. I tried oycy clean and it did not work. I used "YELLOW OUT" It is a powder that comes in a plastic 1 lb. 2 oz. container. Most likely I bought it at WalMart, not sure. It worked on a cotton-polyester top that I bleached by mistake, which then turned it a tannish/yellow. I followed the directions on the back of the YELLOW OUT container; soak in a gallon of water with 1/2 cup of YELLOW OUT for 20 minutes and then wash with detergent not containing any peroxide or bleach (use color safe detergent) The top came out bright white!
Well, you could dye it white.
Sort of : in the body they tend to be pinkish yellow but if you scrape them clean then they appear to be off-white.
How do you remove yellowing from figurines? Image result for How do I restore white after sculpture turns yellow? Cleaning Yellowed Plastic Toys With Baking Soda In a container, form a paste with Dawn and baking soda. Moisten the plastic with a bit of water. Scoop up a bit of paste onto the sponge. Rub the toy in circular motions. ... Once clean, wash in soapy water. Rinse with water. Dry with a towel.
White plastic is plastic that is white
Oxi Clean works like a charm it works try it but get oxi clean stain removal with out chlorine
Generally they are red, black, white, yellow, or brown. It depends on what seahorse type you get as to what color it is, honestly. Mine was black and he turned yellow in different tanks.
you get a wet rag and get some oxy clean and scrub it and it will come right out
dead red true blue clean green mellow yellow
A polishing cloth works great to remove tarnish from white and yellow gold. To clean gold jewelry use a solution of half Mr. Clean and water with a small amount of ammonia. Soak for 15 seconds then rinse with water and dry. If the white gold ring has a yellow tint, you may need to bring the ring into a jewelry store to have it rhodium plated again.
Taj Mahal is affected by acid rain. The white marble has turned yellow
Assuming it has a white gelcoat finish that has oxidised,clean it with acetone and clean rags, then cut it back with 1200 grit wet&dry paper with water,only until it turns white and smooth, taking care not to rub through it. It can then be polished to a high gloss, using cutting compound by hand or machine. Wax it last with carnauba, any car polish will do the job.