Here’s a detailed product description for Biotherm Blue Therapy Retinol Night Serum 30 ml (sometimes referred to as “Blue Thera / Blue Retinol Night Concentrate MV 30 ml”) — what it does, who it’s for, how to use it, and key benefits/considerations.

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🌙 What is Blue Therapy Retinol Night Serum

The Blue Therapy Retinol Night Serum is a potent anti‑aging night treatment by Biotherm. It combines a concentrated retinol formulation with the brand’s signature regenerative marine complex to deliver enhanced skin renewal and anti‑aging benefits. ([Biotherm][1])

* “Blue Retinol” formula: The serum uses a blend of 0.25% pure retinol and 1% of Biotherm’s marine‑derived “Life Plankton™” (aka “Plankton de Vie / Biotech Plankton”), which together are marketed as offering “amplified resurfacing efficacy.” ([Biotherm][1])
* Vegan & “clean” formulation: The product is described as 100% vegan and ~92% biodegradable. ([Tax Free Heinemann][2])
* Target skin type: The serum is generally recommended for normal to oily or combination skin types. ([Biotherm][1])

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✅ What It Does — Key Benefits

Here are the main benefits you can expect from regular use of this night serum.

| Benefit / Target | Effect / Result |
| ------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Wrinkle & Fine Line Reduction | Retinol is a proven anti‑aging ingredient that promotes cell turnover and collagen production, helping reduce the appearance of wrinkles, fine lines and improve skin smoothness over time. The “Blue Retinol” formulation is claimed to double the efficacy compared with standard retinol alone. ([Biotherm][1]) |
| Improved Skin Texture & Evenness | The marine plankton complex plus retinol help renew skin surface, refining texture, evening out tone, and enhancing clarity. ([Care to Beauty][3]) |
| Resurfacing & Skin Renewal | Night after night, the serum supports skin’s natural regeneration — helping skin look healthier, more youthful, and revitalized. ([Biotherm][1]) |
| Moisture & Hydration Support | Although retinol can sometimes dry skin, the serum includes humectants (like glycerin, sodium hyaluronate) and nourishing oils/extracts — helping maintain hydration and comfort. ([Heinemann Shop][4]) |
| Vegan & Eco‑Friendly Formulation | For those conscious about ingredients and environment — the formula avoids animal‑derived ingredients and aims for biodegradability. ([Tax Free Heinemann][2]) |

Overall, the serum is marketed as a “resurfacing, repair and anti‑aging night concentrate” — useful for people wanting to reduce visible signs of aging and improve skin quality over time. ([Biotherm][1])

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🧴 Texture & How It Feels

* The serum has a lightweight, creamy/gel‑serum texture that spreads easily and absorbs quickly — unlike heavy creams. ([Biotherm][1])
* It’s described as non-sticky, breathable, which makes it easier to layer under a night moisturizer if needed. ([Cocooncenter][5])
* Because of its lighter feel, it tends to suit normal to oily/combination skin especially well (though use with care if you have dry or sensitive skin). ([Biotherm][1])

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🕒 How to Use — Suggested Application

* When to use: Evening / night only. Retinol increases skin’s sensitivity to sunlight, so it should not be used before sun exposure. ([Milan Malpensa Boutique][6])
* Initial Frequency: For the first week, apply 2 times per week to allow skin to adjust. Then gradually increase to every other night or as tolerated. ([Heinemann Shop][4])
* Application steps: After cleansing (and toner/serum if used), apply a small amount of the serum onto clean, dry skin — spread evenly over face (avoid eye area), then follow with a moisturizer if desired (especially if skin feels dry). ([Biotherm][7])
* Important: On days when using this serum, avoid using other strong actives (like acids, retinoids, or exfoliating products) to minimize irritation risk. ([Biotherm][7])
* Sun Protection: Because retinol increases photosensitivity, ensure you use a broad‑spectrum sunscreen (SPF 30–50+) every morning. ([Biotherm][7])

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👤 Who It’s Best For

This serum is particularly suited for people who:

* Are starting to notice early signs of aging — fine lines, uneven skin tone, dullness.
* Have normal, combination or oily skin and prefer a light texture over heavy creams.
* Want a “night repair + anti‑aging” product that focuses on resurfacing, smoothing, and improving skin quality over time.
* Prefer a vegan, “cleaner” skincare formula with a focus on sustainability and fewer harsh components.
* Are ready to commit to a consistent night‑time routine (gradual adoption, proper sunscreen use, moisturization) for visible results.

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⚠️ Considerations & What to Know

* Because it contains pure retinol + fragrance (and some essential oil‑derived components like limonene, linalool, geraniol), people with very sensitive skin or history of irritation/allergy should patch‑test first. ([INCIDecoder][8])
* Retinol can cause initial dryness, mild peeling or sensitivity, especially if overused or applied without sufficient hydration or moisturization. Start slowly and moisturize well. ([Biotherm][7])
* Must be used only at night, and follow with sunscreen next morning — skipping sunscreen or sun exposure soon after application can lead to sun sensitivity or irritation. ([Biotherm][7])
* Results require time and consistency; visible reduction in wrinkles or texture usually appears after several weeks to months of regular use. ([Biotherm][1])

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🌟 My Verdict — Why This Is a Strong Night Serum Option

The Blue Therapy Retinol Night Serum is among the more advanced, science‑backed anti‑aging serums available from Biotherm — thanks to its combination of pure retinol + marine regenerative complex + moisturizing base. For someone who wants to work on skin renewal, improve fine lines or uneven texture, and is comfortable starting a retinol-based routine, this serum offers a powerful overnight treatment.

Used properly (gradually, with moisturizer and sunscreen), it can help transform skin over time: smoother surface, improved tone, reduced wrinkles, and a more youthful overall appearance.

If you like — I can pull up 2–3 alternative retinol serums or night treatments (some lighter, some stronger) available in India or online — so you can compare with this Biotherm serum and pick what fits your skin type best.

[1]: https://www.biotherm.de/en_IN/women-care/by-skincare-category/serums-masks/blue-retinol-night-serum/BIO001299.html?utm_source=chatgpt.com "Blue Retinol night serum for advanced aging signs correction"
[2]: https://www.taxfree-heinemann.dk/en/global/biotherm/biotherm-blue-therapy-retinol-night-concentrate-mv-30-ml/p/000000000001535176/?utm_source=chatgpt.com "Biotherm Blue Therapy Retinol Night Concentrate MV 30 ml | Tax Free Heinemann"
[3]: https://www.caretobeauty.com/in/biotherm-blue-retinol-resurface-repair-night-serum-30ml/?utm_source=chatgpt.com "Biotherm Blue Retinol Resurface + Repair Night Serum 30ml India"
[4]: https://www.heinemann-shop.com/en/global/biotherm/biotherm-blue-therapy-retinol-night-concentrate-mv-30-ml/p/000000000001535176/?utm_source=chatgpt.com "Buy Biotherm Blue Therapy Retinol Night Concentrate MV 30 ml online at a great price | Heinemann Shop"
[5]: https://www.cocooncenter.co.uk/biotherm-blue-therapy-blue-retinol-night-serum-anti-aging-30ml/83505.html?utm_source=chatgpt.com "Biotherm Blue Therapy Blue Retinol Night Serum Anti-Aging 30ml"
[6]: https://milanomalpensaboutique.com/en/blue-retinol-night-serum-5348550/?utm_source=chatgpt.com "Biotherm Blue Retinol Night Serum 30Ml | Milan Malpensa Boutique"
[7]: https://www.biotherm.de/en_GB/magazine/bioscience-ingredients/retinol-night-routine-in-5-steps/AR230203-1.html?utm_source=chatgpt.com "How to Use Retinol at Night | ingredient | Biotherm"
[8]: https://incidecoder.com/products/biotherm-blue-retinol-night-serum?utm_source=chatgpt.com "Biotherm Blue Retinol Night Serum ingredients (Explained)"