Lactobacillus/Pumpkin Fruit Ferment Filtrate

Lactobacillus/Pumpkin Fruit Ferment Filtrate is a bioactive ingredient created by fermenting pumpkin fruit using lactobacillus cultures. The fermentation process breaks down the pumpkin's natural compounds into smaller, more bioavailable molecules. The result is a filtrate—a liquid extract rich in amino acids, organic acids, and polysaccharides derived from both the pumpkin and the fermentation process.This ingredient functions primarily as a skin conditioner, helping to improve skin texture and support the skin's natural moisture barrier. It is typically used at concentrations between 20% …

The fermentation process generates lactic acid and other mild hydroxy acids, which can gently exfoliate dead skin cells and support cell turnover. At the same time, the amino acids and polysaccharides from the fermented pumpkin help to attract and bind moisture to the skin, strengthening the barrier.The lactobacillus cultures themselves may also contribute beneficial metabolites that support skin health, though the exact contribution of the live cultures versus the fermentation byproducts is not fully established in published research.

This ingredient is typically found in essences, toners, and hydrating serums rather than rinse-off products, allowing for longer contact time with skin. When used at the concentrations common in formulations (20-30%), it contributes meaningfully to the product's conditioning effect. It can be used daily and pairs well with other hydrating and barrier-supporting ingredients. If you have very sensitive skin, patch test first, as the mild acids may cause sensitivity in some individuals.

This ingredient is generally well-tolerated, with no widespread safety concerns reported. Those with sensitivity to fermented ingredients or lactic acid should introduce it gradually and discontinue if irritation occurs.