Understanding 成分 (せいぶん)
成分 refers to the ingredients or components that make up something, often used in contexts like food, cosmetics, or medicine. When you see 成分 on product labels, it tells you what the item contains.
Usage in Daily Life
You will frequently encounter 成分 when discussing what is inside products, especially for health or safety reasons. For example, checking 成分 in cosmetics or medicine helps avoid allergies or adverse reactions.
Common Collocations
- 成分表示 (せいぶんひょうじ): ingredient list, often on packaging
- 成分分析 (せいぶんぶんせき): component analysis, used in scientific or quality control contexts
- 有効成分 (ゆうこうせいぶん): active ingredient, especially in medicine
Register and Nuance
成分 is a neutral, formal word suitable for written and spoken Japanese, especially in professional or informative contexts. It is not casual slang.
Learner Tip
Don’t confuse 成分 with 原料 (げんりょう), which means raw materials or primary materials. 成分 focuses on the parts that compose the final product, while 原料 refers to the original substances before processing.