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When searching for effective skincare ingredients, the ground may not be the first place that comes to mind. But, clays (which are essentially types of dirt) are well known for their amazing cleansing and purifying properties. Natural clays have been used on the skin for centuries, and continue to be a popular ingredient in products today.
A common misconception is that clays soak up or absorb oils and fats, and are thus beneficial for oily skin. Unfortunately, most clays don’t have the ability to draw excess oil from your skin, with the exception of calcium bentonite.
They do, however, gently exfoliate the top layer of your skin, and remove dead cells, dirt and some of the excess oil with it. In addition to the exfoliation, they also draw water from your skin, which is why clays are not recommended for particular dry and sensitive skin.
The many benefits of using clay in soap:
TYPES OF CLAY
Bentonite Clay
Bentonite clay is created from volcanic ash. The U.S. is the top producer of bentonite clay, with much of the production happening in Wyoming. In bath and beauty products, bentonite clay gives products a nice “slip.” This texture is great for shaving soaps, as it helps the razor glide over the skin. It has strong oil absorbing properties, and is able to absorb more than its mass in water. This makes bentonite clay a great choice for very oily skin.
Brazilian Clay (Natural, Dark Red, Pink, Purple, Yellow)
Brazilian clays are a type of kaolin clay, and come in a wide variety of vibrant hues. They’re naturally colored and do not contain any dyes or pigments. The various shades are achieved by variations in the minerals found in the soil in the different regions of Brazil. Bramble Berry carries five different natural clays — Natural Brazilian, Purple, Yellow, Pink, and Dark Red. Brazilian clays have an “average” amount of absorption, making them a suitable additive for a wide variety of skin types.
French Green Clay
This clay comes from France and is known for its terrific oil absorbing properties. It has a fine texture and is commonly used for color and and oil absorption in facial masks. The light green color comes from decomposed plant matter and iron oxides. It’s best suited for oily skin types.
Green Zeolite Clay
Zeolites are microporous minerals that form when volcanic rocks and ash react with alkaline groundwater. Green zeolite clay has a slightly larger texture than most clays, as well as great absorption properties. Because of the larger texture, it also has very gentle exfoliating properties. It’s best suited for normal to oily skin types.
Kaolin Clay
Kaolin clay is a very fine powdered clay, and can come in a variety of colors. The most common color of kaolin clay is off-white. The fine texture makes it easy to incorporate into a wide variety of projects. This includes eye shadows and cosmetics, as well as soap, bath bombs and more. It is a gentle clay, with less liquid absorbing abilities than most. This makes it suitable for more sensitive and dry skin.
Rose Clay
Rose clay is considered a type of kaolin (kaolinite) clay. It has a fine texture like kaolin, and is suitable for dry skin. The clay is a light to medium pink shade, which comes from a naturally occurring iron oxide. In some projects, it can take on a deep red color or an orange hue. Rose clay makes a fantastic soap additive for both color and gentle oil absorbing properties.
Sea Clay
A dark green clay, sea clay originates from mud laid under the sea millions of years ago. It has a dark green, grayish color. It is commonly used in facial masks to cleanse the skin. It is suitable for normal to oily skin types.
Which clay is best for you?
Depending on your skin type, one clay may be better suited for your skin than another. For example, kaolin clay is a fine-grained clay with mild absorption properties, which makes it better for dry to normal skin. On the other hand, French green clay and bentonite clay have stronger absorption properties, making them a good fit for oily skin.
Dry Skin/Normal Skin – Rose Clay, Kaolin Clay, Brazilian Clay (Natural, Dark Red, Pink, Purple, Yellow)
Normal/Oily Skin – Sea Clay, Green Zeolite Clay, French Green Clay, Bentonite Clay, Brazilian Clay (Natural, Dark Red, Pink, Purple, Yellow)
Source: SoapQueen.com