Interactions with Malassezia yeasts

This category includes non-lipid ferments and strains of yeast that are not directly implicated in conditions involving Malassezia yeasts. Skincare products containing these ingredients can influence the skin's microbial community. However, their impact on Malassezia related skin conditions is often unclear. They can potentially prevent Malassezia growth by enhancing skin biodiversity and balancing the natural microbiome. Yet due to the diverse range of microbes involved, they can sometimes trigger an immune response that results in skin irritation or worsens existing conditions.

Rating: Reactivity depends on skin tolerance

Those with sensitive skin, compromised skin barriers, allergies, or specific dermatological conditions may be more prone to reactions to these ingredients. Some people may find that their skin tolerates them well and even benefits from them, while others may experience a reaction. Reactivity may also depend on the product formulation, the duration of it's use, or the presence of other ingredients.

For individuals with sensitive skin, we recommend avoiding products with these ingredients. But if your skin tolerates fermented or yeast-based ingredients well, you may consider using them with caution.

Matching requirements

Sezia checks for ingredients that contain the following keywords:

• Ferment(s)
• Ferment filtrate
• Ferment extract
• Yeast
• Faex
• Saccharomyces