How to get rid of tiny cracks in a cultured marble sink?

I googled your question and found the answers and tutorial on Doityourself.com. It looks like the answer is yes. For minor cracks they just used clear silicon caulk, for bigger ones they used an epoxy mix. Just an FYI, cultured marble is considered a builder grade top and only has a warranty of 5 years. One way to make it last longer is to cut back on letting hot water run or sit in sink. Believe it or not, hot water breaks it down and speeds up deterioration .

I agree with Kelli. All you can do is prevent the cracks from getting worse. Force two part epoxy into the cracks. Wipe off the excess with nail polish remover. If you remove the drain you'd get a better fix.

They also make small repair kits.... https://www.amazon.com/s?k=cultured+marble+repair+kit&crid=2BDYPM1AR0O0E&sprefix=cultured+marble+repa%2Caps%2C684&ref=nb_sb_ss_i_1_20 the pros use those light repair kits