
What does this mean?
We are THE Source!
For over 40 years, we have been the wind beneath the other brand's wings for most clay mineral skin care brands out there. Not only do we own the mines, mine, and refine our minerals for our own brand, but for many brands on the market today. We felt it was about time we offered our pristine minerals direct to our customers and fans.
Our Calcium Bentonite is from the Clay Dunes of the Green Desert located in the Mojave Desert, California, while our Kaolin from the white crested mountain tops in the Kern River Valley, California.
The Clay Mineral Formulas
Which one is Right for Me?
From Sensitive to Normal to Oily to Combination skin, we have you covered.
Are you Deep Pore Cleansing? Detoxifying your Skin & Body? Managing Acne, Psoriasis, Eczema, or Rosacea? Whatever your need, we can help you on your natural skin care journey.

Maximum Strength Formula
For Oily to Normal Skin Types
Calcium Bentonite Clay, an ancient beauty secret going back as far as the Aztec Empire, is commonly referred to as Indian Healing Clay.
Calcium Bentonite Clay is the pure and natural way to cleanse and detoxify the skin by removing impurities and toxins, deep
cleansing and shrinking pores, revealing a radiant, inner glow like no other! Shine ON!
Calcium Bentonite has been the standard for Facial Clay Mud Masks and Pelotherapy, the use of Clay Mud on the body for cleansing and detoxification.

Anti-Aging 'Hybrid' Formula
Recommended For All Skin Types
Kaolin Clay is a gentle exfoliator, removing dead, outer skin cells, improving subcutaneous circulation, reducing blemishes, smoothing out & rejuvenating skin to its original tone thereby 'brightening' the skin's appearance.
Calcium Bentonite Clay is the natural way to deep pore cleanse, shrinking pores, and detoxifying the skin, removing toxins, and impurities, revealing a radiant, inner glow.
By combining, we get the best of both worlds, which is the closest to a time machine that we could create.

Sensitive & Brightening Formula
For Normal to Dry, Sensitive Skin Types
Kaolin Clay is the gentle exfoliator, removing dead
skin cells, improving circulation, and smoothing out skin tone thus
'brightening' the skin's overall appearance.
A small amount of Calcium Bentonite Clay was added to help
support as an additional detoxifier for gentle cleaning of the sensitive skin.
Consistent use can be effective for reducing blemishes and rejuvenating base skin color to its original tone, possibly even brighter!
Bentonite Clay Mud Mask

The Singles Travel so well

Rejuvenate & Relax

Shop Magnesium Bath Flakes

Featured collections
Before / After
Manage Acne Naturally
Calcium Bentonite Clay is the natural way to deep pore cleanse, shrinking pores, and detoxifying the skin, removing toxins, and impurities, revealing a radiant, inner glow.
Kaolin Clay is a gentle exfoliator, removing dead skin cells, improving circulation, smoothing out skin tone thus 'brightening' and 'lightening' the skin's appearance.
By combining, we get the 'Best of Both Worlds' (which is the closest to a time machine that we could create!)

Before

After
Which one is right for me?
Try each to find out what works best for your skin type












Not sure which formula is right for you?
Try the Assorted Singles to see what formula works best for you!
Calcium Bentonite is the natural way to deep pore cleanse, shrinking pores, and detoxifying the skin, removing toxins, and impurities, revealing a radiant, inner glow.
Kaolin Clay is a gentle exfoliator, removing dead skin cells, improving circulation, smoothing out skin tone thus 'brightening' and 'lightening' the skin's appearance.
With the Kaolin & Bentonite, we get the best of both worlds, which is the closest to a time machine that we could create.
Directions for Use:
- Combine equal parts clay & water (apple cider vinegar can be substituted for half the water) in a non-metallic mixing bowl with a non-metallic utensil.
- Stir gently, slowly adding more liquid or clay until a creamy paste is formed.
- Apply evenly and generously to the face or skin and allow to dry for 10-15 (5-10 minutes for sensitive skin)
- Remove mud mask with warm water & pat skin dry with towel.
- Finish by applying moisturizer or serum.


It all starts with Ore
Every morning, we rise with the sun, digging our fingers into the fresh Earth to retrieve Nature's Bounty. We then allow the clay to bake in the sun for days in the cleansing sun of the Mojave Desert in California.

Refine & Mill
After the clay ore has been kissed by the sun for days, we then mill and refine into a fine powder with particles small enough to pass through a fine sieve for quality and consistency.

Prepared & Packaged for You
The refined clay is then stored in the highest quality cosmetics grade, food safe packaging to maintain freshness until you are ready to use. Whether you enjoy The Standard 16 oz. jars or take some Singles for the weekend away, California Biology is your skin's best friend.
Shop the look

Shop the look


Mud Bath, Body Wraps, and Soaks
Pelotherapy
Pelotherapy is the therapeutic use of mud, or more specifically, treatment by mud baths.
Utilizing the curative power of the Earth in practices such as Pelotherapy should, we believe, truly be considered a lifestyle modification; it should be adopted as an integral part of healthy living. There is no substitute for the benefits that quality healing clays can provide both in and on the body.
With all the contaminants, pollution, and heavy metals we experience on a daily basis, it is critical that we support the liver and kidneys by detoxifying through the biggest organ of the body, the skin.
Give it a try, you know you want to!

