Discussions tagged with 'nano' Doreen Formulating a sunscreen lotion with mineral UV filters. Doreen replied 7 years, 5 months ago 3 Members · 9 Replies Formulating Zink Best non-nano zinc oxide that doesn’t leave white residue @ 5-10%? Zink replied 8 years, 4 months ago 7 Members · 17 Replies Formulating Viewing 1 - 2 of 2 discussions