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2025.11.21
BEAUTY

Are Plant-Based Ingredients Dangerous!? What OSAJI Defines as "Truly Safe Cosmetics"

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#skincare
#organic cosmetics
#dermatology
#sensitive skin
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The market for natural and organic cosmetics has exploded in recent years, with a flood of products formulated with plant-based ingredients. But their actual “safety” is a constant subject of debate.
This brings us to OSAJI, a cosmetics brand that champions "truly safe cosmetics" by developing products grounded in dermatology. We sat down with founder and representative Masakazu Shigeta to discuss his perspective on the “safety myth” surrounding plant-based ingredients, his dedicated approach to development, and his vision for skincare that enhances the skin's inherent power.
PROFILE
Masakazu Shigeta
Masakazu Shigeta

Representative Director, OSAJI Inc.

It All Started with a Question About "Supposedly Safe Cosmetics"

You might think of OSAJI as just another “natural cosmetics” brand. But the truth is, instead of focusing solely on natural ingredients, they develop their products based on dermatological science.
“The journey of OSAJI began when my mother developed PTSD following a car accident, leading to a severe eczema outbreak. She had always used and deeply trusted a brand built on the concept of ‘edible cosmetics,’ but suddenly, even those products became unusable.
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