Keyshu officially introduces the recovery “super product” Bioessence Mask Pre, considered an upgraded successor to the Centella Fiber Mask line with more than 3.8 million units sold. This mask not only inherits the essence of the original centella fiber mask, but also brings a completely new recovery experience. If you are looking for a stronger solution to “rescue” sensitive skin or skin undergoing treatment, this Pre version is Keyshu’s worthy answer.
Inheritance and Breakthrough in Biocosmetic Recovery Technology
Bioessence Mask Pre focuses on specialized solutions, offering immediate soothing care and superior hydration for irritated or sensitive skin:
- Strengthens the skin barrier: High-concentration actives help rebuild the skin’s natural shield and restore a healthier foundation after damage.
- Rapid soothing: Quickly reduces the feeling of redness, burning, irritation, and peeling, bringing comfort after application.
- Deep hydration and tone improvement: Helps address dry, dehydrated skin while supporting the fading of post-inflammatory dullness, leaving skin smoother and more even-looking.
- Optimized design: The lightweight, close-fitting sheet does not slip and helps deliver nutrients evenly into the skin.

Bioessence Mask Pre – the upgraded version of the Centella Fiber Mask
Who Should Use It?
Bioessence Mask Pre is suitable for all skin types and is especially designed for:
- Tired-looking skin: Dry, dull skin needing both fast recovery and safe brightening support.
- Damaged skin: Skin experiencing redness, peeling, or weakness after intensive treatment.
- Post-procedure skin: Skin needing faster recovery and post-treatment dark-spot prevention after laser, peel, or acne extraction.
- Sensitive skin: Skin easily irritated by weather or environment and needing stronger barrier recovery.
Superior Ingredient Profile and Unique Bio-Fiber Mask Technology
Bioessence Mask Pre demonstrates Keyshu’s comprehensive optimization. It combines unique plant-fiber mask technology with a “golden” active ingredient list to rebuild damaged skin at an intensive level:
- Madecassoside (an active compound extracted from centella): The most refined and powerful component in centella, known for anti-inflammatory support, rapid soothing of irritation and redness, and barrier-strengthening benefits.
- Centella extract: Soothes skin, reduces redness, and supports recovery for damaged and sensitive skin.
- Roman Chamomile extract: Provides antioxidant and anti-inflammatory support while calming sensitive skin.
- Sodium Hyaluronate and Glycerin: Hydrate and retain water to keep skin soft and plump.
- Panthenol: Supports recovery, reduces irritation, and improves moisture levels.
- Palmitoyl Tripeptide-5: Supports collagen production and improves firmness and elasticity.
- 3-O-Ethyl Ascorbic Acid: A stable Vitamin C derivative that gently brightens the skin, improves tone, and offers antioxidant benefits.
The mask sheet is woven from Lyocell fiber combined with natural centella fiber, holding essence up to 950%. Its ultra-thin, close-fitting, non-shifting design helps release nutrients effectively into deeper epidermal layers.

Main ingredients in Bioessence Mask Pre
How to Use for Best Results
For best results, follow these basic skincare steps:
- Cleanse the skin: Use a suitable makeup remover to remove dirt and impurities.
- Apply the mask: Adjust Bioessence Mask Pre so it fits closely to the skin surface.
- Relax: Leave the mask on for 15 to 20 minutes.
- Massage gently: After removing the mask, pat the remaining essence into the skin for a smooth, fresh finish.

How to use the mask for the best results
Conclusion
Although it is a new member of the Keyshu product family, Bioessence Mask Pre has quickly received strong attention from the skincare community. Built on the quality foundation of the original Centella Fiber Mask, this upgraded version is expected to become a fast “rescue” solution for skin that needs high-level recovery.
Bioessence Mask Pre is the result of serious research and Keyshu’s deep understanding of customer needs. With a perfect combination of intensive recovery, brightening support, and anti-aging care, it is a worthwhile investment for a professional skincare routine at home.
Keyshu – Inspiring Emotions, Spreading Love
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