| View previous topic :: View next topic |
| Author |
Message |
bishoujo
Joined: 28 Mar 2007
Posts: 1
|
 Posted: Wed Mar 28, 2007 3:31 pm Post subject: Homemade sunblock??? |
 |
|
| Is it okay if I mix zinc oxide powder in my lotion to get an effective sunblock. I use Aveeno Daily Moisturizing Lotion (which is a great lotion). Also, would I have to preserve it in the refrigerator or something? What SPF would I get? :? :? :? |
|
| Back to top |
|
|
|
orangehrzn
Joined: 23 Feb 2005
Posts: 1005
|
| Posted: Wed Mar 28, 2007 8:23 pm Post subject: |
|
|
It's ok but you will run into a host of problems:
It will be gritty unless you have homogenizing equipment. It will be whitish unless you tint it. It is possible that 10% ZnO alters the properties of the base making it drier and harder to spread.
For estimate of SPF based on ZnO concentration see the table in makingcosmetics.com > Resources > About Sunscreens |
|
| Back to top |
|
|
|
|
