Blend the two lightest pink shades in the quad together, then dab onto the very center of lids. (clinique.com)
Allow to cool and check each jar to make sure it sealed by pressing lightly in the center of the lid. (familyfoodandtravel.com)
To check if this needs to be done, press the center of the lid, if its bulged up in the center that means carbon dioxide needs to be released so you don't have a chili explosion. (amandanicolesmith.com)