However, there are many sunscreens on the market, and you might be wondering which type of sunscreen is best for you. Here at Plateroti Dermatology in Templeton, California, skincare is our specialty. Carmelo Plateroti and our talented team understands the importance of keeping your skin happy and healthy, so you can look and feel great.
When chemical sunscreens came out on the market, they gained popularity for their absorbency, lightness, and lack of chalky residue on the skin. On the other hand, mineral sunscreens act like an aluminum foil shield of sorts, deflecting harmful rays away from your skin. When it comes to choosing between the two options, there are more benefits to using mineral sunscreens.
These days, they are made much lighter and less chalky for daily use. Both titanium dioxide and zinc oxide are derived from chalky, reflective materials. While this is beneficial in reflecting the sun's rays, the application of these materials can be unappealing on the skin, because it results in the white, chalky appearance, according to the Environmental Working Group.
For this reason, sunscreen manufacturing companies work to scale down the particles for chemical sunblocks. Titanium dioxide is scaled down to between 10 and nanometers nm , a unit of measurements used to measure very small particles, while zinc oxide is scaled down to 30 to nm. This makes each particular go on the skin less noticeably, yet without being so small that it penetrates the skin. Titanium dioxide is noncomedogenic, meaning it does not contain oil that can clog the skin's pores, according to "The New York Times.
This can help to enhance wound healing. However, it occurs naturally in the form of zincite. But most of the zinc oxide we use in industry is produced synthetically. There are 3 processes for this: indirect process French process , direct process American process and wet chemical process. Furthermore, this substance is insoluble in water; thus, it is useful in many applications. For example, as an additive of rubber, plastic, ceramic, glass, cement, lubricants, etc.
Besides, zinc oxide is also used in ceramic industry due to its favourable properties like high heat capacity, high heat conductivity, low thermal expansion and high melting point. Moreover, zinc oxide crystallizes in two main forms: hexagonal structure and cubic structure. The Mohs scale hardness for this material is 4. Also, it is an amphoteric oxide. Though it is insoluble in water, it dissolves in most acids. Sometimes, solid zinc oxide can dissolve in alkalis as well.
It gives soluble zincates. Here's what you need to know about titanium dioxide and zinc oxide, aka mineral sunscreen:. Titanium dioxide and zinc oxide are two naturally occurring minerals. When applied topically, they have the ability to block the sun's UVA and UVB radiation from being absorbed into your skin, meaning they are considered broad-spectrum.
There are actually two different kinds of sunscreen: chemical and physical sunscreens. The first type of sunscreen is chemical. These are made of synthetic ingredients like oxybenzone and octinoxate you'll see these listed in the "active ingredients" section at the top of the label. Meanwhile, a physical sunscreen also referred to as mineral sunscreen , uses either titanium dioxide, zinc oxide, or a combo of both to physically block the sun's radiation by forming a barrier that sits on top of your skin, says Dr.
Mraz Robinson. The UV rays literally bounce off of this barrier, so they can't penetrate the skin and cause damage and skin cancer. Unlike chemical sunscreens , which have ingredients that can cause irritation and even allergic reactions, physical sunscreens are pretty gentle on the skin.
In fact, the National Eczema Association recommends mineral sunscreens for people with eczema. Any sunscreen including physical ones should be applied 15 to 20 minutes before heading outside.
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