How Your Skin Barrier Works
Contains: Physical & Microbial Barriers
Healthy Skin Barrier
Shields skin from damage,
locks in moisture.
Damaged Skin Barrier
Lets irritants in, causes
water loss and skin issues.

R9+ B5 Yeast Extreme Repair Serum is designed for sensitive, fragile, and irritated skin, providing extreme skin barrier repair while helping to calm redness and restore balance caused by dryness and environmental stress.
Formulated with Pro-vitamin B5, Shengchuan Lotus Extract, and Lactobacillus Soybean Ferment Extract, this probiotic-based serum provides intensive hydration while supporting barrier repair and healthier, more resilient skin.
Lightweight and suitable for daily use, R9+ works as the foundation serum in the PAL routine, preparing the skin before applying targeted serums. Following PAL’s philosophy of essential actives in precise ratios, it delivers effective barrier repair without unnecessary ingredients.
Shields skin from damage,
locks in moisture.
Lets irritants in, causes
water loss and skin issues.

Extreme Repair Serum
Repairing essence for sensitive, aging, and acne-prone skin.
Boosts resilience and long-term skin health.

5% Provitamin B5
Repairs skin’s natural barrier.

3% Shengchuan
Lotus Extract
Plant-based actives rich in polyphenols, flavonoids, and anthocyanins.


1% BioStine LB37
12-strain probiotic yeast restores skin’s microecology, strengthens barrier, and targets acne and aging.
Sensitive, Aging
Acne Skin
Healthy Skin
The entire ingredient composition is very straightforward and transparent,
with only 9 kinds. The design concept is to meet the needs of the
skin and eliminate unnecessary ingredients that are of little significance to the skin.
| Active ingredient | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| PANTHENOL | Provitamin B5 | ||||||||
| BIFIDA FERMENT LYSATE & LACTOBACILLUS/SOYBEAN FERMENT EXTRACT | Bifida Ferment Filtrate & Lactobacillus/Soybean Ferment Extract |
||||||||
| Active Plant Extracts | |||||||||
| KALANCHOE SPATHULATA EXTRACT | Raw Chuanlian Extract | ||||||||
| Moisturizing & Emollient ingredient | |||||||||
| BUTYLENE GLYCOL | Butanediol | ||||||||
| PROPYLENE GLYCOL | Propylene Glycol | ||||||||
| Water | |||||||||
| Water | Water | ||||||||
| Preservative System | |||||||||
| PHENOXYETHANOL | Phenoxyethanol | ||||||||
| CAPRYLYL GLYCOL | Caprylyl Glycol | ||||||||

Expiry Date: 23 December 2028
Country of Origin: Taiwan
Manufacturer & Packer: BEAUTY-FACTOR BIOCHEMICAL TECHNOLOGY CO., LTD.
Address: 6F., No. 6, Ln. 270, Sec. 3, Beishen Rd., Shenkeng Dist., New Taipei City, Taiwan
Imported & Marketed By: Digital Doctor Pvt. Ltd.
Address: M/s Digital Doctor Private Limited, Flat No. 252-J, First Floor, Cabin No. 203 Sant Nagar East of Kailash New Delhi, Delhi (India) – 110065
Customer Care number: +91 99586 66309
Email: customercare@digidoctor.cc
The B5 Yeast Extreme Skin Barrier Repair Serum R9+ is designed to provide targeted hydration while supporting the skin barrier. Its lightweight texture makes it easy to layer with other everyday skincare products.
Helps maintain the skin's protective barrier.
Helps replenish moisture without a heavy feel.
Designed to provide gentle daily barrier care.
Sits comfortably under other skincare products.
Can be incorporated into morning and evening routines across different skin types.
A skin barrier repair serum works by delivering hydrating and barrier-supporting ingredients to the skin. The lightweight formula absorbs quickly and helps replenish moisture while supporting the skin's natural protective function. Consistent use can help reinforce the skin barrier and improve hydration and repair. As barrier recovery progresses, skin may feel smoother, softer, and more resilient. Adding a serum to a consistent routine can complement moisturizer use and provide targeted support when the skin feels dry, tight, or easily stressed.
Using a skin repair serum consistently can support several aspects of skin health, particularly when dryness or a weakened barrier is a concern.
Helps maintain the skin's protective function.
Helps the skin retain moisture for longer.
Supports softer and more comfortable-looking skin.
Regular hydration can make rough skin feel smoother.
A well-supported barrier can help skin better handle everyday environmental stressors.
Adding this skin barrier repair serum to your routine is simple. Apply it after cleansing and before moisturizer so the serum can provide targeted hydration as part of your skincare routine. A few drops are generally enough to cover the face without excessive layering. It can be used in the morning and evening according to your routine and the product directions. Applying serum to slightly damp skin may also help support hydration. During the daytime, finish with sunscreen to protect the skin from UV exposure.
A skin barrier repair serum provides targeted hydration and supports the skin's protective barrier. It can be particularly useful when skin feels dry, tight, rough, or uncomfortable.
A serum usually has a lightweight texture and delivers concentrated skincare ingredients, while a moisturizer primarily helps hydrate the skin and reduce moisture loss.
It may be possible to use a barrier-supporting serum alongside actives such as retinol. Introduce active products gradually and follow the directions for each product to reduce the chance of irritation.
The serum is designed for daily barrier care, but individual skin can react differently. Patch testing a new product before regular use is a sensible precaution for sensitive skin.
Results can vary depending on your skin and routine. Hydration may feel improved relatively quickly, while visible changes in texture and barrier condition generally require consistent use over time.