# Isntree TW-Real Bifida Ampoule for sensitive skin

**Lovi Fit: Average fit for sensitive skin.**
Normal Skin Fit: High · Effectiveness: Average · Safety: Excellent.

Page: https://lovi.care/skincare/de/p/isntree/tw-real-bifida-ampoule/for/sensitive-skin

The Lovi Fit is the same in every country; only the stores and prices differ, and the ones here are for Germany.

Brand: [Isntree](https://lovi.care/skincare/de/brands/isntree)
Category: [Serums and treatments](https://lovi.care/skincare/de/best/serums)

This fit is calculated for the concerns frequently associated with sensitive skin: redness, stinging, and reactions to new products. For scores based on a full skin profile (12D face scan, goals, preferences), use the Lovi app.

Works for sensitive skin; other serums fit it better.

## Why this fit

- Suitable for normal skin, this product offers general skincare benefits like hydration and soothing due to Bifida Lysate Ferment and Glycerin, which support barrier repair and hydration. These ingredients also provide supportive benefits for your redness and irritation.
- The formula enhances skin barrier resilience with Bifida Lysate Ferment and Beta-Glucan, contributing to overall skin health.
- The safety profile is excellent, with no risks of irritation for your sensitive skin due to the absence of harsh ingredients and the presence of soothing components.

## Fit by skin type

- [Oily skin](https://lovi.care/skincare/de/p/isntree/tw-real-bifida-ampoule/for/oily-skin): High
- [Dry skin](https://lovi.care/skincare/de/p/isntree/tw-real-bifida-ampoule/for/dry-skin): Superior
- [Combination skin](https://lovi.care/skincare/de/p/isntree/tw-real-bifida-ampoule/for/combination-skin): Average
- [Sensitive skin](https://lovi.care/skincare/de/p/isntree/tw-real-bifida-ampoule/for/sensitive-skin): Average (this page)
- [Acne-prone skin](https://lovi.care/skincare/de/p/isntree/tw-real-bifida-ampoule/for/acne-prone-skin): High
- [Skin with dark spots](https://lovi.care/skincare/de/p/isntree/tw-real-bifida-ampoule/for/dark-spots): High
- [Mature skin](https://lovi.care/skincare/de/p/isntree/tw-real-bifida-ampoule/for/mature-skin): High
- [Dry sensitive skin](https://lovi.care/skincare/de/p/isntree/tw-real-bifida-ampoule/for/dry-sensitive-skin): High
- [Oily acne-prone skin](https://lovi.care/skincare/de/p/isntree/tw-real-bifida-ampoule/for/oily-acne-prone-skin): High

## Key ingredients

Bifida Lysate Ferment, Niacinamide, Sodium Hyaluronate, Hydrolyzed Collagen, Copper Tripeptide-1

## What the research says

- A single application of a moisturizing fluid containing hyaluronic acid 1%, glycerin 5%, and Centella asiatica stem cells extract significantly increased skin hydration by 29% and reduced transepidermal water loss at 24 hours compared to baseline and an untreated control site in twenty healthy women. ([Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/))
- Skin care regimens containing beta-glucan improved hemoglobin index, skin hydration, and transepidermal water loss compared to vehicle control in 20 patients undergoing fractional laser therapy. ([Journal of Cosmetic Dermatology, 2021](https://pubmed.ncbi.nlm.nih.gov/33128496/))
- The combination of Thermus thermophilus and Bacillus subtilis mixed-culture ferment extract and copper tripeptide-1 GHK-Cu reduced inflammatory cytokines, protected skin explants from UV-induced damage, and improved wrinkles and skin barrier conditions compared to individual components or controls. ([Skin Research and Technology, 2026](https://pubmed.ncbi.nlm.nih.gov/42573538/))
- Topical application of Bifida Ferment Lysate strengthens the skin barrier function by upregulating barrier and antimicrobial peptide genes, exhibiting strong antioxidant properties, and decreasing inflammatory cytokine secretion in vitro. ([Journal of Cosmetic Dermatology, 2023](https://pubmed.ncbi.nlm.nih.gov/37218728/))
- Topical post-laser application of human adipocyte-derived mesenchymal stem cell media combined with niacinamide significantly improved wrinkle index, melanin index, patient satisfaction, and investigator esthetic improvement scores compared to vehicle cream in patients with aging skin. ([Journal of Cosmetic Dermatology, 2021](https://pubmed.ncbi.nlm.nih.gov/33103316/))
- Topical nicotinamide prevented solar-simulated UV-induced immunosuppression in healthy volunteers, and men experienced immunosuppression at solar-simulated UV doses three times lower than those required for women. ([The Journal of Investigative Dermatology, 2008](https://pubmed.ncbi.nlm.nih.gov/17882270/))
- Topical 5% niacinamide applied twice daily for 12 weeks reduced fine lines and wrinkles, hyperpigmented spots, red blotchiness, and skin sallowness, and improved skin elasticity compared to vehicle control in 50 female white subjects with facial photoaging. ([Dermatologic Surgery, 2005](https://pubmed.ncbi.nlm.nih.gov/16029679/))
- Topical application of 0.1% hyaluronic acid formulations of different molecular weights led to significant improvements in skin hydration and elasticity, with low-molecular-weight formulations also significantly reducing wrinkle depth in seventy-six female subjects compared to a vehicle control. ([Journal of Drugs in Dermatology, 2011](https://pubmed.ncbi.nlm.nih.gov/22052267/))
- Topical application of hyaluronic acid in conjunction with free gingival graft significantly reduced donor site postoperative pain until day 7 compared to normal saline, with no significant differences in graft dimensions or patient satisfaction. ([Clinical Oral Investigations, 2022](https://pubmed.ncbi.nlm.nih.gov/34623507/))
- Treatment with a hyaluronic acid-containing mouth rinse or topical gel led to significant lesion reduction, pain relief, and normalization of lesion color in adult patients with minor recurrent aphthous stomatitis, with the gel formulation showing an earlier healing onset at 3 days. ([BMC Oral Health, 2019](https://pubmed.ncbi.nlm.nih.gov/31311529/))
- Topical application of TAC/Collagen postbiotics gel improved skin moisture score and inflammation index, and reduced porphyrins and brown spots in 20 volunteers with acne vulgaris. ([Journal of Cosmetic Dermatology, 2022](https://pubmed.ncbi.nlm.nih.gov/35818134/))
- Topical collagen tripeptide application improved skin wrinkles, elasticity, and density while reducing advanced glycated end products in 22 Asian women over 4 weeks. ([International Journal of Molecular Sciences, 2022](https://pubmed.ncbi.nlm.nih.gov/35163025/))
- Marine collagen extracted from Greenland halibut skin showed a non-cytotoxic effect on fibroblast cells and provided a slight skin hydration effect when incorporated into cosmetic hydrogel formulations at dosages of 0.1, 0.25, and 0.5% in 23 healthy volunteers. ([Marine Drugs, 2023](https://pubmed.ncbi.nlm.nih.gov/36827098/))
- Topical copper tripeptide complex on CO2 laser-resurfaced skin caused no significant reduction in erythema or objective improvement in wrinkles compared to controls, but significantly increased patient satisfaction regarding overall skin quality. ([Archives of Facial Plastic Surgery, 2006](https://pubmed.ncbi.nlm.nih.gov/16847171/))
- A novel regimen combining a hydroxy acid-based scrub and copper tripeptide serum significantly reduced adherent scalp flaking by 61.24%, increased hair density by 12.48%, increased hair thickness by 25.36%, and improved scalp skin hydration by 76.24% in adults with mild to moderate dandruff over 15 days. ([Cureus, 2024](https://pubmed.ncbi.nlm.nih.gov/39449909/))
- Copper applied transdermally as a tripeptide on human skin ex vivo permeated the tissue and was retained in amounts potentially effective for treating inflammatory diseases. ([Inflammation Research, 2010](https://pubmed.ncbi.nlm.nih.gov/20703511/))

## What reviewers say

Based on a very large amount of data, users consistently praise this ampoule for its ability to strengthen the skin barrier and provide deep hydration without heaviness, resulting in a "glass skin" glow and smoother texture. It is highly effective for sensitive and dry skin types seeking anti-aging benefits. A small minority of users with acne-prone or very oily skin experienced minor breakouts or found the finish slightly tacky.

- Liked: Lightweight & fast absorbing (mostly mentioned)
- Liked: Hydrating & plumping (often mentioned)
- Liked: Strengthens skin barrier (often mentioned)
- Liked: Gentle & non-irritating (sometimes noted)
- Disliked: No visible results (sometimes noted)
- Disliked: Caused breakouts/irritation (rarely noted)
- Disliked: Texture/finish issues (rarely noted)

## How to apply

- Use your serum in the PM routine, starting 3 times a week before building up to daily use if your skin is happy.
- Apply the serum after cleansing and toning, but before putting on your moisturizer for the best results.
- Gently press 2-3 drops of the serum into your skin and wait a minute ⏱ for it to soak in.
- Since your skin is sensitive and easily irritated, apply the serum on completely dry skin to help keep it calm.
- Always do a patch test before your first use and avoid getting the serum too close to your eyes .
- Video: https://storage.pora.ai/c879dda8655a61c19d3d8c9ebad6b06d.mp4

## Questions and answers

### How well does Isntree TW-Real Bifida work for sensitive skin?

This product works for sensitive skin, though other treatments fit it better. It is unlikely to cause irritation and helps calm redness and dryness, but a product for this skin needs stronger soothing ingredients and powerful antioxidants that target redness and irritation while remaining completely safe.

### Which ingredients make this serum a good fit for sensitive skin?

Bifida Lysate Ferment, glycerin, and beta-glucan make this treatment a good fit for sensitive skin by supporting hydration and barrier repair, while avoiding harsh ingredients that could trigger redness or irritation. Treatments that fit this skin best need soothing components, gentle hydrators, and powerful antioxidants to calm the skin and strengthen the barrier without causing discomfort.
Sources: [Journal of Cosmetic Dermatology, 2021](https://pubmed.ncbi.nlm.nih.gov/33128496/)

### What does Bifida Ferment Lysate do for sensitive skin?

Bifida Ferment Lysate helps calm reactive skin, making it less sensitive and more resistant to daily irritation and physical or chemical aggression. It achieves this by strengthening your skin barrier and keeping moisture locked in while decreasing redness.
Sources: [Experimental Dermatology, 2010](https://pubmed.ncbi.nlm.nih.gov/19624730/), [Scientific Reports, 2023](https://pubmed.ncbi.nlm.nih.gov/37803101/)

### What does Niacinamide do for sensitive skin?

Niacinamide helps calm sensitive skin by strengthening the skin barrier and reducing redness and irritation. It is very well tolerated and may improve overall comfort and resilience with regular use.
Sources: [Cutis, 2005](https://pubmed.ncbi.nlm.nih.gov/16209160/), [Journal of Cosmetic Dermatology, 2004](https://pubmed.ncbi.nlm.nih.gov/17147561/)

### Where does this serum go in a skincare routine for sensitive skin?

This treatment goes in the evening routine after your cleansing and toning steps, just before you apply your moisturizer. It is very unlikely to cause irritation on sensitive skin due to soothing components, but a product for this skin needs extra barrier-strengthening and calming ingredients.

### Can I use this serum with retinol, and in what order?

You can use this treatment alongside retinol by applying this serum first and your retinol afterwards. Sensitive skin needs a product of this type to include calming components like Bifida Lysate Ferment and Glycerin for hydration and barrier support while you use strong actives.

### How often should I use this serum?

This treatment works for your sensitive skin in the evening routine, though other products fit it better. To fit this skin well, a product of this type needs calming ingredients and deep hydration like glycerin and sodium hyaluronate.

### Can this serum clog pores, cause breakouts or purging for sensitive skin?

This serum is unlikely to cause irritation or breakouts on sensitive skin, though some users may experience occasional texture issues or lack of visible results. To truly prevent breakouts and calm sensitive skin, a treatment of this type needs lightweight hydrators and gentle soothing ingredients that do not overload the pores.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

### Is this serum fragrance-free and alcohol-free?

Yes, it has no fragrance and no drying alcohol.

## Alternatives for sensitive skin

- [Paula's Choice RESIST Super Antioxidant Concentrate Serum](https://lovi.care/skincare/de/p/paula-s-choice/resist-super-antioxidant-concentrate-serum/for/sensitive-skin) — Superior fit — €57.00 at Amazon
- [SkinCeuticals C E Ferulic](https://lovi.care/skincare/de/p/skinceuticals/c-e-ferulic/for/sensitive-skin) — High fit — €169.99 at Amazon
- [Neogen Dermalogy Real Vitamin C Serum](https://lovi.care/skincare/de/p/neogen-dermalogy/real-vitamin-c-serum/for/sensitive-skin) — High fit — €29.76 at Amazon

## Pairs well with

- Cleanser: [Fresh Soy Face Cleanser](https://lovi.care/skincare/de/p/fresh/soy-face-cleanser/for/sensitive-skin) — Superior fit — €39.99 at Amazon
- Soothing Toner: [SKIN1004 Centella Asiatica Toning Toner](https://lovi.care/skincare/de/p/skin1004/centella-asiatica-toning-toner/for/sensitive-skin) — Superior fit — €19.89 at Amazon
- Moisturizer with Sun Protection: [Torriden DIVE-IN Mild Sunscreen](https://lovi.care/skincare/de/p/torriden/dive-in-mild-sunscreen/for/sensitive-skin) — Superior fit — €18.00 at Amazon

## Where to buy

- Amazon.de: €16.80 (https://www.amazon.de/dp/B082TWZNYB?tag=lovi-care-web-product05-21&linkCode=osi&th=1&psc=1)
Prices checked 6 Nov 2026.

## Ingredients

Bifida Lysate Ferment, Dipropylene Glycol, Niacinamide, Glycerin, Lactobacillus Pumpkin Extract Ferment, Lactobacillus Soybean Extract Ferment, Rice Ferment Filtrate Sake Ferment Filtrate, Sodium Hyaluronate, Hydrolyzed Collagen, Willow Bark Extract, Origanum Vulgare Leaf Extract, Cinnamomum Cassia Bark Extract, Portulaca Oleracea Extract, Chamaecyparis Obtusa Leaf Extract, Beta-Glucan, Palmitoyl Oligopeptide, Copper Tripeptide-1, Acetyl Hexapeptide-8, Allantoin, Hydroxyethylcellulose, Panthenol, Carbomer, Arginine, Butylene Glycol, Scutellaria Baicalensis Root Extract, Illicium Verum Fruit Extract Anise Fruit Extract, Adenosine, 1,2-Hexanediol, Disodium Edta
## About the Lovi Fit

Lovi: Unbiased, science-based skincare AI trained on real user outcomes.

Lovi calculates every fit score from the full ingredient list with brand-independent rules its dermatologists and cosmetic chemists build and review, and personalizes every pick with AI trained on the real results of millions of users. Lovi trains its fit score models on a proprietary dataset built from more than 10,000 expert-labeled products and more than 100,000 simulated examples, following an internally consistent methodology presented at Cosmoprof, AMWC, and Skin of Color Update. Levels from best to worst: Superior, High, Average, Low, Caution, Warning.

Behind this fit score: Nadia Kapleva, MS (Co-founder, Medical Director); Alexey Shagraev, PhD (Co-founder, CEO and CTO); Dr. Sofía Perea Pérez, MD, MSc (Medical Board); Aishani Shah, MD (Medical Board); Asya Zubkova, MS (Medical Board); Hanna Kurets, MD (Medical Board, Medical Advisor); Elina Nazarenko, MD (Medical Board); Victoria Derkova, MS (Medical Board).

Page built Nov 8, 2026.

More from Lovi: https://lovi.care/skincare/llms.txt

## This page in other countries

- United States: https://lovi.care/skincare/p/isntree/tw-real-bifida-ampoule/for/sensitive-skin
- United Kingdom: https://lovi.care/skincare/uk/p/isntree/tw-real-bifida-ampoule/for/sensitive-skin
- Ireland: https://lovi.care/skincare/ie/p/isntree/tw-real-bifida-ampoule/for/sensitive-skin
- Germany: https://lovi.care/skincare/de/p/isntree/tw-real-bifida-ampoule/for/sensitive-skin (this page)
- France: https://lovi.care/skincare/fr/p/isntree/tw-real-bifida-ampoule/for/sensitive-skin
- Italy: https://lovi.care/skincare/it/p/isntree/tw-real-bifida-ampoule/for/sensitive-skin
- Netherlands: https://lovi.care/skincare/nl/p/isntree/tw-real-bifida-ampoule/for/sensitive-skin
- Spain: https://lovi.care/skincare/es/p/isntree/tw-real-bifida-ampoule/for/sensitive-skin
- Canada: https://lovi.care/skincare/ca/p/isntree/tw-real-bifida-ampoule/for/sensitive-skin
- Australia: https://lovi.care/skincare/au/p/isntree/tw-real-bifida-ampoule/for/sensitive-skin
- Singapore: https://lovi.care/skincare/sg/p/isntree/tw-real-bifida-ampoule/for/sensitive-skin
- Saudi Arabia: https://lovi.care/skincare/sa/p/isntree/tw-real-bifida-ampoule/for/sensitive-skin
- United Arab Emirates: https://lovi.care/skincare/ae/p/isntree/tw-real-bifida-ampoule/for/sensitive-skin