Description
Coral Apatite
Coral Apatite is a highly purified hydroxyapatite (95%) derived from natural fossil coral from Okinawa, Japan. It is produced through an advanced technological process in which it is combined with phosphoric acid. This product is a fine white powder with an average particle size of 10 microns and meets the standards of the Cosmetic Ingredients of Quasi-drug Raw Materials Standard 2006. Its structure closely resembles the minerals found in human teeth and bones.
It helps brighten the skin through its ability to absorb pigments and impurities, while also providing a natural soft-focus effect that blurs fine lines. It is ideal for those seeking brighter, smoother skin with a more even skin tone.
| Subject | Description |
|---|---|
| Appearance | White color powder |
| pH | N/A |
| Composition | Coral apatite 95% or More |
| Applications | Cosmetic Product |
| Suggested Concentration | 5 – 10%. Oral care 0.5 – 1% hair dye, make up, skin care |
| Function | Whitening |
| INCI Name | HYDROXIPATITE |
| Storage conditions | Avoid direct sunlight, high temperature and humid. After opening, use as soon as possible |
| Shelf-Life | 36 month after manufacturing date (Unopened) |
Coral Apatite stands out for its use of natural fossil coral from the seas of Okinawa, Japan, which is synthesized with phosphoric acid to produce hydroxyapatite with 95% purity and an average particle size of 10 microns. Although it is not water-soluble, it disperses well in formulations.
This ingredient offers a wide range of special benefits, including pigment adsorption to help reduce dullness and dark spots, lipid peroxide adsorption to control excess oil and minimize pores, and a soft-focus effect that blurs fine lines and pores for a smoother skin appearance. It also provides a re-calcification effect that helps restore tooth enamel.
Thanks to these properties, Coral Apatite can be used in various applications—from oral care products (5–10%) to skincare, cosmetics, and hair-dye formulations (0.5–1%). It undergoes strict quality testing and is free from heavy metals and contaminants.
Mechanism of Action and Key Benefits
Active Ingredient: Hydroxyapatite
Chemical Structure:
Hydroxyapatite has the chemical formula Ca₁₀(PO₄)₆(OH)₂. It is a calcium phosphate mineral with a hexagonal crystal structure, composed of calcium (Ca), phosphate (PO₄), and hydroxyl (OH). These components form the main mineral structure of tooth enamel, bones, and other hard tissues in the human body. Coral Apatite derived from fossil coral features a micro-porous structure and an average particle size of 10 microns, giving it a high surface area and excellent adsorption capacity.
Mechanism of Action:
Pigment and Impurity Adsorption
The porous structure of Coral Apatite can adsorb melanin pigment, substances that cause dark spots and hyperpigmentation, as well as impurities such as stains from coffee, cigarettes, and red wine. This helps deeply cleanse the skin and teeth, resulting in a brighter and cleaner appearance.
Skin Brightening (Whitening)
By adsorbing accumulated pigments on the skin, it helps reduce dullness, dark spots, and discoloration, promoting brighter, more even-toned skin.
Soft-Focus Effect
Its fine particles evenly scatter and reflect light, creating a soft-focus effect that blurs fine lines, pores, and uneven texture. This gives the skin a smooth, refined look, similar to a natural filter.
Adsorption of Excess Oil and Oxidized Lipids
The porous structure also absorbs excess sebum and oxidized oils on the skin, helping control shine, reduce enlarged pores, and prevent acne formation.
Enamel Re-calcification
For oral care applications, Coral Apatite closely resembles natural enamel and can bind to and fill micro-cracks or pores on the tooth surface, helping strengthen enamel and protect against tooth decay.
Biocompatibility and Skin Safety
Because hydroxyapatite closely resembles natural minerals in the body, it is highly biocompatible and unlikely to cause irritation or sensitivity.
Benefits and Applications:
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Brightens and evens skin tone
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Adsorbs pigments, dark spots, and surface impurities
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Provides a soft-focus effect to blur wrinkles and pores
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Controls oil and reduces enlarged pores
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Restores and strengthens tooth enamel
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Suitable for oral care products (5–10%)
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Suitable for skincare, cosmetics, and hair dyes (0.5–1%)
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Safe, gentle, and suitable for all skin types
Pigment Adsorption Test
Method:
The pigment adsorption ability of Coral Apatite was evaluated using three types of staining solutions: red wine, tobacco extract, and coffee. Each solution was divided into three test tubes as follows:
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Tube 1: Original solution (no additives)
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Tube 2: Solution mixed with regular toothpaste
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Tube 3: Solution mixed with toothpaste containing Coral Apatite
After leaving the tubes to stand for a specified period, the color changes were observed and the clarity of each solution was compared to assess the pigment adsorption efficiency.
Results:
Red wine: Tube 1 (darkest red) > Tube 2 (moderately dark red) > Tube 3 (light yellow, nearly clear)
Tobacco extract: Tube 1 (dark brown) > Tube 2 (moderate brown) > Tube 3 (light yellow)
Coffee: Tube 1 (dark brown) > Tube 2 (moderate brown) > Tube 3 (light yellow)
Conclusion:
Coral Apatite demonstrated excellent pigment adsorption capability. It was able to remove pigments from red wine, tobacco, and coffee significantly more effectively than regular toothpaste. These results confirm that the porous structure of Coral Apatite provides high efficiency in adsorbing pigments, impurities, and stains. This makes it highly suitable for use in oral care products for deep cleaning and whitening, as well as in skincare formulations aimed at reducing dark spots, hyperpigmentation, and enhancing overall skin brightness.
Research Study
A study conducted by the Department of Applied Chemistry at Tokyo Metropolitan University investigated the properties of hydroxyapatite derived from natural coral and found it to be highly suitable for use in cosmetic products. The research showed that coral-derived hydroxyapatite possesses a fine porous structure and a high surface area, giving it strong adsorption capabilities for impurities and toxins on the skin.
The study also found that the particle hardness of hydroxyapatite is appropriate for exfoliation without causing irritation. Compatibility tests indicated that hydroxyapatite does not trigger allergic reactions or skin inflammation due to its composition being similar to minerals naturally found in the human body.
Overall, hydroxyapatite is considered safe and ideal for use in skincare products, particularly cleansing and exfoliating formulations.
Reference
Nakamura, S., et al. “Application of coral-derived hydroxyapatite in cosmetic products.” Journal of Cosmetic Science, 2015, 66(4): 285-295
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Product Safety and Warranty Information
- The product is manufactured through a certified process by leading organizations and has certification for industry standards that can be referenced.
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The product is safe and can be used to support the registration of a cosmetic product.
- The product is a raw material for industrial use, not a finished product. Users must have the knowledge and appropriate tools for using the raw material.
- The product is warranted according to the specifications, please refer to the terms and conditions for details.