Primarily used in medical contexts to describe treatments that avoid radical intervention, such as conservative therapy. Can also be used more broadly for preservative approaches.
Conservative treatment is often chosen for fractures.
この薬には保存的な効果がある。
This medicine has a preservative effect.
Compound of 保存 (preservation) + 的 (-like, -ive). The exact historical derivation is uncertain, but the word follows a common pattern for forming adjectival nouns.