What Is Aspergillus/Raspberry Fruit/Rice Ferment Filtrate?
Aspergillus/Raspberry Fruit/Rice Ferment Filtrate is a liquid that comes from fermenting rice and raspberry fruit with the help of the Aspergillus fungus, often Aspergillus oryzae. During fermentation the natural starches and sugars in rice and raspberry break down into smaller molecules like amino acids, peptides, organic acids and simple sugars. These give the filtrate its skin loving profile, rich in moisturising factors and subtle antioxidants.
Fermented ingredients have been part of East Asian food and beauty rituals for centuries, but they entered mainstream cosmetics more recently as Korean and Japanese brands showed the skin benefits of fermented rice water and fruit extracts. By pairing rice with raspberry, formulators created a filtrate that combines the soothing minerals of rice with the berry’s vitamins and polyphenols.
Production begins with soaking and steaming rice, then blending it with crushed raspberry. The mixture is inoculated with Aspergillus and left to ferment under controlled warmth and humidity. After several days it is pressed and carefully filtered to remove solids, leaving a clear or slightly pink fluid that is stable and odour-light. The filtrate is then added to cosmetic bases.
You will most often see Aspergillus/Raspberry Fruit/Rice Ferment Filtrate in hydrating essences, sheet masks, moisturisers, anti aging serums, brightening lotions and even lightweight hair conditioners where extra softness is desired.
Aspergillus/Raspberry Fruit/Rice Ferment Filtrate’s Cosmetic Benefits/Uses
This ferment delivers two main actions that make it a versatile addition to many formulas:
- Emollient – forms a smooth layer on the skin that fills in microscopic gaps so the surface feels softer and more flexible, which helps reduce rough patches and gives a silky finish
- Humectant – draws water from the environment and deeper skin layers toward the surface, boosting immediate hydration, plumping the look of fine lines and supporting a healthy moisture barrier
Who Can Use Aspergillus/Raspberry Fruit/Rice Ferment Filtrate
This ferment is generally well tolerated by all skin types. Dry and mature skin appreciate its moisturising and smoothing ability while oily or combination skin benefit from its light water attracting feel that does not leave a heavy residue. Sensitive skin usually reacts positively thanks to the gentle profile of fermented rice but anyone with a history of reacting to fruit extracts or ferments should proceed with care.
The ingredient is sourced from plant materials and a food grade fungus so it is suitable for both vegans and vegetarians. There are no animal by products involved in standard production however formulas can still include other animal derived ingredients so it is best to check the full product label if that is a concern.
No specific warnings exist for pregnant or breastfeeding women when it comes to topical use of this filtrate. It is considered a mild cosmetic humectant yet this is not medical advice and anyone who is pregnant or nursing should clear every new skincare product with their healthcare provider first.
It does not increase the skin’s sensitivity to sunlight so daily use does not require extra sun precautions beyond a normal broad spectrum sunscreen. The filtrate is also water based which makes it easy to layer with most actives and moisturisers without pilling or interaction issues.
Potential Side Effects/Adverse Reactions
Reactions to the topical use of Aspergillus/Raspberry Fruit/Rice Ferment Filtrate vary from person to person. The following is a list of potential side effects that could occur although they are uncommon when the ingredient is formulated and used correctly.
- Mild irritation or redness especially on very sensitive skin
- Allergic response to residual fungal proteins leading to itching or swelling
- Transient stinging if applied over freshly exfoliated or broken skin
- Acne or folliculitis flare in individuals prone to fungal acne
- Contact dermatitis from natural raspberry compounds in rare cases
If any negative reaction develops stop using the product immediately and consult a qualified healthcare professional or dermatologist for guidance.
Comedogenic Rating
Rating: 1 / 5
This filtrate is water based and contains mostly small molecules like amino acids, sugars and organic acids that do not block pores. It has almost no heavy oils or waxes so the chance of clogging is low. The rating is not a perfect zero because its natural sugars may feed the yeast that drives fungal acne in a small number of people.
Overall it is usually fine for skin that breaks out easily, though anyone who knows they are very reactive to ferments should keep an eye on how their skin responds.
The ingredient rinses away cleanly and layers well under lightweight moisturisers so it rarely contributes to product build up that can trap debris in pores.
Summary
Aspergillus/Raspberry Fruit/Rice Ferment Filtrate works mainly as a humectant and an emollient. It pulls water into the upper skin layers for a quick hydration boost then smooths the surface so skin feels soft and looks fresher. Fermentation breaks the rice and raspberry nutrients into smaller pieces that skin can easily absorb, giving a gentle hit of vitamins and antioxidants at the same time.
The ferment sits in the rising wave of K-beauty inspired ingredients. It is not as famous as niacinamide or hyaluronic acid yet its popularity is growing as more brands look for natural ways to add lightweight moisture to their formulas.
Safety wise it is mild and suitable for most people, including those with sensitive or oily skin. Serious side effects are rare but, as with any new cosmetic ingredient, patch testing a small area before full use is the smartest way to rule out surprises.