Methylparaben is an anti-irritant agent and water-soluble anti-microbial. It is an anti-fungal and very commonly used as a preservative for cosmetics, drugs and food items. It functions as a preservative as well as a bacteriostatic agent. Methylparaben is extracted from the benzoic acid that is derived from benzoin tree gum. It is considered both to be a phenol as well as an ester. A lot of times, methylparaben is used in skincare and beauty projects for rejuvenation purposes.