Strong joints, beautiful hair, firm skin or sturdy nails: there are now countless collagen products being promoted for just as many complaints. They come in all shapes, sizes and forms – and, of course, at every price point. But what actually is collagen, what does it do in our bodies, and most importantly, is there any truth behind the often bold promises? Our comprehensive collagen comparison provides answers.
Collagen is what's known as a structural protein that occurs naturally in the body. Think of it simply as an invisible scaffold that holds our entire body together and gives it structure. Our body produces this protein on its own and incorporates it into organs and a wide variety of tissues, with particularly high concentrations found in the skin, bones, cartilage, tendons, ligaments and fascia.
Whilst we're young, we produce collagen in abundance. But as soon as we pass the magic age of 25, our body decides to slow down collagen production, as if saying to itself: "Enough is enough – I've got other things to be getting on with now!"
When collagen production declines, this is referred to as a collagen deficiency. The first signs are often visible: skin and connective tissue lose their firmness and elasticity, and fine lines and wrinkles appear. But it's not just the skin that suffers – hair and nails also become brittle, and hair breakage occurs. Hair no longer grows as quickly as it used to, which many people find frustrating. However, we don't have to simply accept these signs of ageing, as a high-quality collagen powder can help boost natural production once again.
A widespread myth claims that collagen supplements are only relevant for skincare. This is wrong! Collagen is a true all-rounder: it not only supports skin elasticity and helps reduce wrinkles, but also plays a crucial role in the health of hair, nails, bones, joints, cartilage, muscles, tendons and connective tissue. The versatility of collagen is particularly evident when it comes to strengthening connective tissue and promoting faster hair growth. The benefits are therefore not limited to outward beauty but also influence inner wellbeing.
Another widespread myth is that collagen supplements have an immediate effect on wellbeing. However, supplementation needs to be a long-term, ongoing commitment. Several scientific studies have shown that visible improvements only appear after several weeks – whether for skin, hair, nails or connective tissue. So anyone expecting their complexion or hair growth to improve overnight will be disappointed. Collagen only delivers its benefits through regular, long-term consumption.
Not all collagen is equally good, as there are different sources and manufacturing processes that can affect quality. The quality of collagen also depends on its purity, concentration and bioavailability. Some collagen products are derived from high-quality animal sources, whilst others come from inferior sources. It's important to pay attention to the origin, manufacturing process and quality standards of a collagen product to ensure it delivers the desired results. The quality of a supplement can make all the difference when it comes to strengthening skin, hair and nails as well as firming up weak connective tissue.
A myth that can be dispelled in a single sentence: plant-based collagen does not exist. Collagen comes exclusively from animal sources, as plants cannot produce collagen. Some products do claim to be vegan, but they actually consist of a blend of proteins and amino acids. The real collagen that could counteract a collagen deficiency is missing.
Collagen and Vitamin C go together like bread and butter: like reliable partners, they work together to keep our body in one piece. Without Vitamin C, collagen cannot reach its full potential. Skin, hair, muscles and joints – none of them can do without collagen peptides and Vitamin C. This vitamin is equally indispensable because our metabolism requires it for the synthesis of collagen.
As we age, not only do the symptoms of collagen deficiency become apparent, but older people also tend to have lower Vitamin C levels. The body can no longer absorb nutrients as efficiently. This is yet another reason why a high-quality collagen supplement should always contain Vitamin C. In addition to Vitamin C, a premium product should also include other valuable vitamins and minerals in carefully balanced amounts, as this provides the body with comprehensive, holistic support from many important supplementary nutrients.
Our test winner is the bioactive premium collagen powder pureSGP Kollagen Peptide in pharmaceutical quality. The product is only available in pharmacies or from pureSGP's own online brand shop.
The powder contains collagen peptides in the form of high-quality, pure collagen hydrolysate, which is further hydrolysed in the digestive tract into smaller peptides or even free amino acids. These can be easily absorbed in the intestine. The collagen hydrolysate is derived from pure collagen and is therefore free from gluten, sugar, fat, cholesterol and carbohydrates, artificial colourants, flavourings and sweeteners. The product contains no additives or preservatives.
Instead, it is enriched with Vitamin C – the essential partner of collagen for collagen synthesis in the body – as well as valuable micronutrients such as zinc, biotin, Vitamin D and copper for skin, hair, nails, connective tissue and muscles. 1
pureSGP Kollagen Peptide also stands out for its straightforward ease of use. Simply stir the required amount into water, tea, coffee, smoothies or soups and enjoy. Unlike many other collagen powders, pureSGP Kollagen Peptide dissolves easily and has a neutral taste.
pureSGP Kollagen Peptide contains high-quality, pure collagen hydrolysate made from natural bovine collagen peptides. Through a process known as enzymatic hydrolysis, the proteins are broken down into smaller, bioactive peptides that are particularly easy for the human body to absorb. The product is designed for holistic body support — benefiting the skin, hair, nails, connective tissue, muscles, tendons, bones, joints, cartilage and even blood vessels.
Rating based on our criteria:
pureSGP Kollagen Peptide impresses us with its excellently composed ingredients. High-quality collagen is combined with important vitamins and minerals, including vitamin C, which is essential for collagen synthesis. The excellent solubility and neutral-tasting formulation speak to the manufacturer's expertise. The included dosing spoon allows you to measure the required amount with precision.
Order now directly from the brand shop
Glow25 Collagen Powder contains hydrolysed bovine collagen. The product is designed to support skin, hair and nails.
Rating based on our criteria:
In our test, the product scores well with its easily digestible collagen peptides and good coverage. Points are deducted because the collagen contained in the product is neither certified nor from a pharmaceutical manufacturer. It also lacks essential vitamin C and minerals. This makes it unsuitable for comprehensive body support.
Buy online here
Wehle Sports Collagen Pulver is made from Collapure collagen peptides. The product is designed to support skin, hair, nails, cartilage and bones.
Rating based on our criteria:
According to the manufacturer, this product consists of small collagen peptides that are easily absorbed by the body. The collagen from Wehle offers good coverage and only a slight animal taste. Unfortunately, it contains nothing but collagen, meaning it lacks the all-important supportive vitamin C as well as any other vitamins and minerals.
Buy online here
Primal State Collagen Pulver contains certified bovine collagen. The product is designed to support skin, hair, nails and muscles.
Rating based on our criteria:
We think it's great that the product uses certified, high-quality collagen, but sadly that's where the advantages end. Despite the relatively high price tag, the product contains no additional vitamins or minerals whatsoever. Contrary to what the packaging claims, stirring it into coffee leaves lumps that also have an unpleasant animal taste. In our editorial team, the energising morning ritual quickly turned into an ordeal. A definite no-go for us!
Buy online here
Vital Proteins Collagen Peptides contains collagen derived from bovine hide. The product is suitable for a paleo diet.
Rating based on our criteria:
The product contains easily digestible collagen peptides; unfortunately, it comes without any additional vitamins or minerals needed for comprehensive body support. It dissolves well in coffee but regrettably has a strong beefy aftertaste.
Buy online here
1Pullar JM et al. The Roles of Vitamin C in Skin Health. Nutrients. 2017 Aug 12;9(8):866. • The information on this page does not constitute medical advice and should not be regarded as such. This product is not a substitute for medication or other treatments prescribed by a doctor or healthcare provider. If you are pregnant, breastfeeding, taking medication or under medical supervision, please consult a doctor or healthcare professional before use. This product is not intended to diagnose or prevent disease. • Results may vary from person to person. Testimonials do not represent typical results. • As an Amazon Associate, we earn from qualifying purchases.