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

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 our R&D team understands ‘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 particles. Rod type ZnO particles have huge advantages over sphere type ZnO particles in the use of sunscreen with higher UV blocking performances and lower in whitening effect

2. Encapsulation and synthetic technology

Sunjin is developing and mass producing high quality UV filters with our own technology that combines nanotechnology and micro-technology. The capsule products synthesized using this technology have 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 successfully mass produced surface modified Hectorite and applied these materials in formulation to introduce silicon free hectorite based water releasing W/O emulsion (ECODROPGEL) for the first time in the world.


Sunjin is developing diverse skin-care materials based on Hectorite.

Hectorite has plate crystalline structure which can self-assemble into house of cards/honey comb network 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 following Figure. Sunjin modified 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 mass producing both organic and inorganic based microbeads. 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 most commonly used for surface treatment. However, fatty acid has problems 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 base 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 mass producing fatty alcohol surface treated particles 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 stabilized 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. In addition 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