[diycosmetics]

Just thought I would weigh in here for a bit since I had a customer who read this thread and is now concerned that no pink or red may be achieved with just iron oxide and that all labels that say otherwise are false. 
You certainly may be many shades of pink and red with iron oxide and manganese and the 2 combined. Additionally with the addition of tin oxide you get many different colored refections such as violet, green, blue, red and gold without adding any chromium green etc.
Finally iron oxides in cosmetic are not natural, they are made in a lab and are “nature identical”. Natural Iron Oxides do not achieve the low heavy metal requirements of the FDA. Ultramarine, Chromium Green and Manganese Violet are not Natural, they also are made in a lab. Theoretically there is no such thing as “Natural Mineral Makeup” .  
Rebecca Midriff (Owner of Just Pigments and DIY Cosmetics)

[diycosmetics]

I see you have posted our link, http://www.justpigments.com.
Yes they are truly batch certified in small quantities.
Rebecca

[diycosmetics]

One of my companies does sell small quantities of batch certified D&C and FD&C Dyes. We can do this because we have the actual manufacturer who holds the certificate pack and label all the bags for us and they supply a copy of the matching compliance form. It takes ages to get them though as we are not on top of their priority list when it comes to filling orders. There is also a pricey packing fee which is fine with me as they are incredibly messy to pack. Thanks both Bob and Naomi for all the clarification. Rebecca

[diycosmetics]

I am not an expert on this but have make liposomes by mixing retinol with lecithin at high speeds. It may not have any effect on whether the retinol is “time released” but my thoughts are it helps to stabilize it since it breaks down easily.

[diycosmetics]

Most of the Suppliers such as Cognis have very good surfactant based pearling agents that work very well using small amounts. Possibly one of the smaller suppliers like Lotioncraft sell one of them. I think that is a better option over mica.