Why foundations oxidize




















Luckily, there are things you can do to prevent this. This may seem like a no brainer, but clean skin is healthy skin, and healthy skin is happy skin.

Don't even think about applying foundation on an unwashed face or worse — over yesterday's makeup! That's just asking for mismatched tones and a host of other problems, too. Be sure to cleanse your face each morning, prior to applying any product or makeup. In the first few hours, it looks amazing. Then, later in the afternoon, you notice that your foundation looks darker.

Ever seen the flesh of a sliced apple turn brown when left out for too long? A similar process occurs with your foundation. Repeat once more after the foundation is applied. This helps absorb all the excess oils in your foundation and helps prolong the wear of your foundation. Develop and improve products. List of Partners vendors. Erin Celletti has nearly 10 years experience, covering nearly all beats.

Ever go to take another bite of an apple, and notice how it's started to brown just a few minutes after the first bite? Or, how about the annoying fact that avocados will turn brownish-black in what feels like just seconds after you've sliced them?

That's all due to a fun little chemical reaction called oxidation, and it doesn't only apply to food—it can happen to your foundation , too. Chemically, oxidation occurs when a chemical reacts with another molecule and then loses some of its electrons, increasing its oxidation state or oxidation number.

In cosmetics, this can result in color and consistency changes. So, you know how your foundation looked perfectly matched and natural when you ran out the door, but a quick middle-of-the-day mirror glance left you looking a little orange?

Well, oxidation might be to blame. Many contributing factors may cause your foundation to oxidize— skin texture , cleanliness, natural oils, and even the way a foundation appears once it is applied, dries, and is mixed with oxygen. Luckily, there are things you can do to prevent this. Ahead, read our expert tips to prevent your foundation from oxidizing. Meet the Expert. This may seem like a no-brainer, but clean skin is healthy skin, and healthy skin is happy skin.

Don't even think about applying foundation on an unwashed face or worse—over yesterday's makeup! That's just asking for mismatched tones and a host of other problems. Be sure to cleanse your face each morning, before applying any product or makeup.

Before you apply moisturizer, don't skip this important skin care tip. Swiping on a facial toner will help to balance the pH of your skin while also absorbing excess oil your cleanser may have left behind. Zeichner explains that foundation oxidation "occurs more commonly in people who have oily skin," so eliminating excess oil as much as you can prior to application is an important first step to preserve the integrity of the color.

Zeichner says that properly applying a primer to your skin pre-foundation, may help absorb excess oil while also creating a neutralized base layer for your foundation to bind to.

By nature, the minerals in makeup are therefore prone to oxidation. Titanium dioxide, zinc oxide, and iron oxide are three minerals commonly found in makeup. If these minerals are high up in the ingredient list, then the makeup is more likely to oxidize.

Titanium dioxide, most especially, is very common as a white pigment, so lighter foundations will have bigger amounts of it. Oxides are not the only ingredients that are prone to oxidation though. As for the "acidic skin" theory, here's a hard fact: all of us have acidic skin!

Normal, healthy skin has to have a low pH level called the acid mantle because the acidity actually protects from bacteria and irritation. However, the level of acidity can range from anywhere between 4. Want to keep your makeup from oxidizing? Here are some tips to help prevent oxidation, or at least slow it down.



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