[iatreia]

ok... a lot of MA say my face is acidic and it makes foundations oxidize on me... they go orangey...

I'm not particularly oily, and but I tend to sweat easily :/

do you know any reasons why? and any techniques to prevent it?

[agatapas]

does this happen with all foundations ??? cos I had this case with EDM, all their foundations turn orange on me, but I had more luck with other brands. I also do not believe it may be due to acidic ph of your skin, while I use creams with strong acids, sometimes even during the day, under foundation and it never caused my foundation to turn orange.

Your foundation isn't oxidizing. the pigments used in mineral makeups are metal oxides....titanium dioxide, iron oxides and zinc oxide. These are already oxidized.

Everyones skin is acidic.....the pH of skin is between 4.2 and 5.6.....so this has nothing to do with why your foundation turns orange.

Mineral makeus usually contain no wetting agents (liquids like cyclomethicone, mineral oil, esters, triglycerides...or stuff like sorbitan sesquioleate). Becasue the pigments aren't "wet out" the sebum from your pores, your liquid primer....or even the oils in your moisturizer can intensify the color of the pigments....

Yellow iron oxide is the one that seems to be easier to wet out than the other pigments (this I know from making pigments grinds). So it seems to make sense that it would be the easiest for your sebum to wet out. Your skin doesn't need to be really oily for that to happen...

If you wash your face before you apply the makeup....you are stripping it of most of the sebum. So your face probably has less oil on it when you put your makeup on. Throughout the day your sebaceous glands are pumping out sebum....eventually enough will accumulate on your face and the pigments in your makeup will look more intense.....

[agatapas]

Labrat in my situation it wasn't the color looking more intense, while this happen with all foundations. After the whole day, they start looking differently than in the morning. Usually the color of foundation chages a bit, but not turns orange.

When I first wore EDM foundation I looked great at the begining and even an hour after applying it, but few hours later my face was basically orange, and believe sebum and watering the pigments have nothing to do with it.

[iatreia]

hehehe ok... thanks for the insight, agatapas and Labrat81 ^_^

I do notice that chalky foundations tend to be okay later on

[mk12]

Originally Posted by Labrat81

Your foundation isn't oxidizing. the pigments used in mineral makeups are metal oxides....titanium dioxide, iron oxides and zinc oxide. These are already oxidized.

Everyones skin is acidic.....the pH of skin is between 4.2 and 5.6.....so this has nothing to do with why your foundation turns orange.

Mineral makeus usually contain no wetting agents (liquids like cyclomethicone, mineral oil, esters, triglycerides...or stuff like sorbitan sesquioleate). Becasue the pigments aren't "wet out" the sebum from your pores, your liquid primer....or even the oils in your moisturizer can intensify the color of the pigments....

Yellow iron oxide is the one that seems to be easier to wet out than the other pigments (this I know from making pigments grinds). So it seems to make sense that it would be the easiest for your sebum to wet out. Your skin doesn't need to be really oily for that to happen...

If you wash your face before you apply the makeup....you are stripping it of most of the sebum. So your face probably has less oil on it when you put your makeup on. Throughout the day your sebaceous glands are pumping out sebum....eventually enough will accumulate on your face and the pigments in your makeup will look more intense.....

That's interesting. If that's true, does that mean that the more yellow foundations are more likely to intensify during the day?

[missmelaniem]

This IS interesting, because I have found that some foundations oxidize and some don't. I seem to do best with stick foundations and I always use a yellow powder.

I also find this interesting because powder alone does not oxidize on me.

[squirl-nutkin]

I guess you can go a bit lighter in shade and then it looks okay when it oxidizes. If you want to change the body acidity try googling alkaline diet.

[macupjunkie]

Originally Posted by squirl-nutkin

I guess you can go a bit lighter in shade and then it looks okay when it oxidizes. If you want to change the body acidity try googling alkaline diet.

People do that? That's strange because the skin's acidity is the body's way of defense against some bacterias.. so neutralizing your skin might lead to more acne and stuff..

[squirl-nutkin]

No, its not that kind of acid but I thought it might help her skin in some. Alkaline foods are plants and veggies and acidic foods are grains, cheeses, breads, pastas which are filler and cheaper to eat. In general we eat too much of acidic foods and its believed that cancer forms from a diet too high in acidic foods. We should be eating more alkaline at least 75% and only 25% in acidic. Easier said than done if you are not rich enough to eat that way. Just google alkaline diet for more info. I just thought on the off chance it might help.

[AppleRose]

Great info Labrat!

[speerrituall1]

Have you tried a primer?

[iatreia]

Originally Posted by speerrituall1

Have you tried a primer?

just recently bought a bottle (S5 mattifying primer from Bare Naturals, a local company here)

let's see what'll happen

[pinkminnow]

I'm planning to get that S5 primer too

[iatreia]

Originally Posted by pinkminnow

I'm planning to get that S5 primer too

Its the first primer I got, and I find it good. My foundation is just a tad lighter for me.

however, I regret about paying for 490 pesos for such a small amount. I saw The Present from Philosophy and it was only around Php1200~ (if I remember correctly)... and its waaaaaaaaaay bigger than the S5 bottle

[missleers]

Labrat.... do you do your own grinding? Could you tell me some more about titanium dioxide and zinc oxide please? I am curious to know more about mineral makeup as oppossed to regular makeup and if it is really as promising as everyone claims.

[ColdDayInHell]

Originally Posted by Labrat81