Home R&D

Edwin Land of Polaroid said about the importance of people who could stand at the intersection of humanities and sciences, and I decided that’s what I wanted to do.

- Steve Jobs

Cosmetic raw material industry has characteristics of both ‘High Technology’ and ‘Fashion’. This means cosmetic raw material industry is not all about the technology but it also requires insights into a market and consumers.

Sunjin started from developing duplicates of products from many advanced companies. However, today Sunjin is showing an outstanding performance with the world’s first and only products. This is because we understand ‘High Technology’ from consumers’ point of view and productizes what they need in terms of ‘Fashion’.

1.Morphology controlling Nanotechnology

In 2002, Sunjin developed manufacturing technologies of spherical nanoparticles. In 2019, Sunjin further explored and successfully developed the world’s first rod type ZnO. Rod type ZnO has huge advantages over sphere type ZnO in the use of sunscreen with higher UV blocking performances and lower in whitening effect.

2. Encapsulation and synthetic technology

Sunjin is developing and manufacturing high quality UV filters with our own technology that combines nanotechnology and micro-technology. The capsule products synthesized using this technology leave less of a white cast and give skin a smooth and soft feel which improved disadvantages of inorganic UV filters. Moreover, they reduce skin irritation, which is a disadvantage of organic UV filters.

3. Hectorite based Emulsifier and Thickner

Sunjin has developed surface treated Hectorite for the second time in the world and succeeded in mass production. Using Hectorite technology, Sunjin has successfully developed the world’s first water releasing W/O emulsifier based on silicon-free Hectorite, ECODROPGEL.


Sunjin is developing diverse skin care materials based on Hectorite.

Hectorite platelets can self-assemble into house of cards structure that can retain various active ingredients. In this way, Sunjin was able to develop the remarkable active cosmetic ingredient delivering system used in numerous skin care products.

Sunjin has developed Hectorite based active ingredients delivery system as shown in the following Figure. Sunjin treated Hectorite surface with DDAC and dispersed these materials in oil phase to form Hectogel. Then emulsifier was further introduced to prepare 2D Hybrid Emulsifier where Ceramide and other active ingredients can be added to prepare our most recent innovative products, CERAPLEX and ACTIVEPLEX.

5. Microbeads Synthesis

Sunjin has been manufacturing both organic and inorganic based micro beads. Along with ‘Microplastic Free’ which is one of the biggest market trends, Sunjin has developed the replacement for the microplastic beads using silica based materials.

6. Surface Treatment Technology

Since 1960s, fatty acid has been the most commonly used surface treatment. However, fatty acid has the problem of hydrolysis due to its ester bonds and unpleasant odor by oxidation. Therefore, the most of surface treatment of cosmetic materials has been replaced by silicone oil from fatty acids since 1980s.

However, these days ‘Silicone-free’ surface treatment is getting more required as there are high demands for eco-friendly cosmetic material. Therefore, Sunjin developed surface treatment with fatty alcohol which tightly binds to the surface of the particles with ether bonds for long term stability. Since 2017, Sunjin has been developed the surface treatment technology with fatty alcohol for the first time in the world.

7. Cosmetic Formulation Technology

Sunjin has developed many innovative formulations such as silicone-free water releasing skin care formulation and Ceramide composed W/O formulation. Formulation and material technologies are highly intertwined and it is very important to know how materials behave in the formulation. When materials are presented in the forms of formulation, materials are much more appealing to the customers as they can visually understand actual application of the materials.

Customer Service