Bioidentical Collagen Serum 30 ml

The Bioidentical Collagen Serum by Josh Rosebrook particularly well demonstrates how far the brand goes beyond classic plant-based cosmetics. At its center is SH-Polypeptide-47 - a biotech-produced, vegan polypeptide based on type I collagen. It is produced by fermenting cultured yeast cells and replicates the protein structure characteristic of human type I collagen in micromolecular form. With regular use, the skin appears smoother, plumper, and more resilient, fine lines appear softened, and loss of firmness is specifically addressed.

• Product type: lightweight treatment serum with biofermented type I collagen peptide
• Skin types: suitable for all skin types, including sensitive and dehydrated skin; particularly recommended for mature skin
• Skin concerns: diminishing firmness, fine lines, dryness, and skin that appears less elastic or plump
• Main effect: makes the skin appear smoother, plumper, and more elastic while supporting a resilient skin feel
• Key ingredients: SH-Polypeptide-47, Ectoin, hyaluronic acid, sea moss, and rice and other bioferments
• Texture: lightweight, silky, and without a heavy feel on the skin
• Special feature: collagen active from vegan biofermentation rather than an animal-derived raw material or an ingredient merely described as “plant collagen”
• Quality: with numerous certified organic ingredients, vegan, cruelty-free, made in the USA

This is a key difference from so-called “plant collagen”: Plants do not produce collagen themselves. The term usually refers to plant extracts, amino acids, or polysaccharides that nourish the skin or support its moisture levels. The Bioidentical Collagen Serum, by contrast, uses a collagen polypeptide produced through biofermentation and combines this modern biotechnology with Josh Rosebrook’s botanical and fermentation-based formulation expertise.

Ectoin, hyaluronic acid, aloe vera, rice water, and sea moss strengthen the moisture-binding side of the formula. They are joined by ferments as well as turkey tail, chaga, bamboo, and chlorella - an unusual active ingredient matrix that contributes antioxidant plant compounds, polysaccharides, and skin-conditioning ferment components. The texture remains light and silky and is therefore suitable both on its own under a cream and as a targeted treatment step in a more advanced anti-aging routine.

Key ingredients

• SH-Polypeptide-47 - bioidentical microcollagen is the formula’s most exceptional active ingredient. Collagen is a large structural protein and cannot simply be “refilled” into the skin by applying classic collagen molecules. This formula therefore takes a different approach: through biofermentation with cultured yeast cells, a much smaller, water-soluble collagen active based on type I collagen is produced. It conditions the skin and supports a smoother-, plumper-, and firmer-looking complexion. Its production is interesting as well as its effect: the active ingredient is free of animal-derived collagen and combines modern biotechnology with a vegan formulation.
• Ectoin is what is known as an extremolyte - a small molecule that certain microorganisms in nature use to protect themselves from dryness, high temperatures, and other extreme environmental conditions. In skincare, Ectoin forms a stabilizing hydration shell around proteins and cell structures. This supports moisture retention and the skin barrier and helps the skin better compensate for the effects of dryness and external stressors. Ectoin is therefore a highly suitable partner for the collagen active in a formula focused on elasticity and resilience.
• Sea moss, hyaluronic acid, aloe vera, and glycerin create a multi-level moisture network. Hyaluronic acid and glycerin attract water and bind it in the stratum corneum, while the polysaccharides in sea moss form a fine, moisture-retaining film on the skin. Aloe vera complements this effect with additional polysaccharides. The result is skin that feels more supple and may appear visibly plumper - especially dehydration lines benefit from this combination.
• Rice water and Saccharomyces/Rice Ferment Filtrate bring Josh Rosebrook’s fermentation expertise into the formula. During fermentation, components of the starting material are enzymatically broken down, producing smaller metabolic byproducts such as amino acids and organic compounds. In skincare, such ferments are valued for their moisturizing and skin-conditioning properties and support a smooth, healthy-looking complexion.
• Turkey tail and chaga are two functional mushrooms with a complex range of polysaccharides and secondary plant compounds. Their beta-glucans and antioxidant compounds in particular make them interesting for skincare: they add a soothing, moisture-preserving, and antioxidant component to the formula and support skin that appears more resilient and balanced.
• Bamboo, chlorella, and Pseudoalteromonas ferment expand the formula with mineral-rich botanical ingredients and biotech-derived skin-conditioning substances. Bamboo is especially known for its natural silicon content, while chlorella provides a broad range of amino acids, pigments, and antioxidant plant compounds. Together with the marine ferment, they create an unusually complex supporting matrix around the central collagen active.

How to use

• Apply morning and evening after cleansing and toner.
• One to two pumps and distribute over the face and neck using gentle pressing movements.
• Use the serum as the first concentrated treatment step, then apply cream or facial oil.
• For a routine specifically focused on peptides, firmness, and the skin barrier, follow with Ultra Peptide Cream.
• During the day, finish your skincare routine with a suitable sunscreen.

FAQ

What does “bioidentical collagen” mean in this serum?
It refers to SH-Polypeptide-47, a biotech-produced collagen active based on type I collagen. It is made through fermentation with cultured yeast cells and mimics the protein structure of human type I collagen. Animal-derived collagen is not used.

Is this the same as plant collagen?
No. Plants do not produce collagen. Products with “plant collagen” usually contain plant extracts, amino acids, or polysaccharides that bind moisture or nourish the skin. SH-Polypeptide-47, by contrast, is produced biotechnologically as a collagen-based active ingredient.

Can collagen from a serum really enter the skin?
Conventional collagen consists of very large protein molecules and therefore primarily acts on the skin’s surface. The Bioidentical Collagen Serum uses a much smaller, biotechnologically produced collagen structure. For its cosmetic effect, the skin-conditioning properties and interaction with Ectoin, humectants, and ferments are what matter - the skin is intended to appear smoother, plumper, and more elastic.

Who is the Bioidentical Collagen Serum particularly suitable for?
Especially for skin whose firmness, elasticity, and plumpness are declining or where fine lines are becoming more visible. Thanks to Ectoin, hyaluronic acid, aloe vera, and glycerin, it is also a good choice for dehydrated skin.

Is the serum suitable for sensitive skin?
Yes. The lightweight, moisture-focused formula is generally suitable for sensitive skin as well. However, it contains a small amount of orange oil. Anyone who is highly sensitive to essential oils should first test the product on a small area of skin.

Can I combine the serum with retinoids or vitamin C?
Yes. The Bioidentical Collagen Serum contains no exfoliating acids or classic retinoids and combines well with vitamin C, retinoids, and other anti-aging ingredients. When using multiple active products, the routine should nevertheless always be adapted to individual skin tolerance.

Is the Bioidentical Collagen Serum vegan?
Yes. The collagen polypeptide is produced biotechnologically and does not come from animals.

For further targeted care for firmness, fine lines, and skin renewal, explore our Anti-Aging Facial Care.

Josh Rosebrook

Josh Rosebrook combines high-quality botanical raw materials with modern biotechnology and cosmetic active ingredient research when these improve a formulation. The independent, founder-led brand develops its own formulas in small batches and prioritizes quality and product performance over fleeting trends - the Bioidentical Collagen Serum is a particularly good example.

Ingredients

*Water (Aqua), *Glycerin, *Olea Europaea (Olive) Fruit Oil, Jojoba Esters, C12-16 Alcohols, Polyhydroxystearic Acid, Oryza Sativa (Rice) Seed Water, *Aloe Barbadensis (Aloe Vera) Leaf Juice, Chondrus Crispus Extract, Sh-Polypeptide-47 (Bioidentical Micro Collagen), Ectoin, Bambusa Arundinacea (Bamboo) Stem Extract, *Trametes Versicolor (Turkey Tail) Mushroom, *Inonotus Obliquus (Chaga Mushroom), Saccharomyces/Rice Ferment Filtrate, Pseudoalteromonas Ferment Extract, Chlorella Vulgaris Powder, Sodium Hyaluronate, Lactobacillus Ferment, Propanediol, Tocopherol (Vitamin E), *Citric Acid, Xanthan Gum, Leuconostoc/Radish Root Ferment Filtrate, Palmitic Acid, Sodium Anisate, Caprylyl/Capryl Glucoside, Caprylyl Glycol, Sodium Levulinate, Hydroxyacetophenone, Pentylene Glycol, 1,2-Hexanediol, Hydrogenated Lecithin, Phenethyl Alcohol, *Citrus Sinensis FCF (Orange) Peel Oil Expressed

*CERTIFIED ORGANIC