Ooh, cold powder sounds refreshing! Are you talking about body powder for keeping cool during hot days, or something for the kids' playtime? A few of us mums use translucent powder on the kids before they go out to play kasi it helps absorb sweat and keeps them from feeling sticky, tapos the "cold" feeling is such a hit with them especially pag summer. If you mean something else, share more details and we can brainstorm together!