sealing gaps in white cabinets?
Your right on track, running a thin bead of caulk is going to fill those gaps and will remain flexible to prevent cracking in the future. First get yourself a good interior food safe latex, or water based kitchen and bath caulk. You will then want to run a thin bead of caulk along the gaps and areas that have split. Follow that and using your finger or a caulking tool, gently force the caulk into the gaps or cracked areas. Since you are working with a water based caulk cleaning up the cabinets will be simple, just wipe down your caulk lines with a damp sponge or rag but donít wait too long before doing so because water wont clean up the hardened caulk. Hope this helps and if you need any further assistance feel free to ask.