What collagen experts say - skin ageing, supplements and what actually works.

Collagen is one of the most talked about proteins in skin health, but understanding how it changes over time can help explain why many people add supplements to their routine.

In a recent expert discussion featuring scientists, dermatologists, nutritionists and hair specialists, Absolute Collagen’s expert panel of Dr Pyal Patel, Dr Dave Reilly, Dr Sophie Shotter, Eva Proudman and Jenna Hope explained what happens to collagen as we age, why nutrition matters and how collagen supplementation can support skin, hair and overall wellbeing.

Here’s what the experts say about collagen loss , how supplements work and why consistency matters.

Why collagen changes as we age.

Collagen is the main structural protein in the body and plays a central role in maintaining skin structure.

As Dr Pyal explains, “Collagen is a main structural protein in the body, so it works as a scaffold holding together all the tissues and supporting skin elasticity and wrinkles.”

Over time, natural collagen production begins to decline. According to Dr Pyal, “From the age of 25, we start producing less collagen, and by age 50 many of us have actually lost half of our natural collagen stores.”

This natural change can affect how skin looks and feels. As collagen levels decrease, skin may gradually become thinner, less firm and less elastic, contributing to the visible signs of ageing.

External factors can also influence this process. Experts highlight that UV exposure, pollution, hormonal changes and genetics can all accelerate collagen loss over time.

Why topical skincare alone may not be enough.

Skincare products remain an important part of many beauty routines, but experts note that they often work primarily on the surface of the skin.

As Dr Sophie Shotter explains, “Topical creams are great for giving your skin that surface level boost, but they mainly reach only the upper layers of the skin.”

This is why many experts recommend supporting skin from within too.

“If you want meaningful results, like reducing fine lines and wrinkles and boosting elasticity, then a collagen supplement is definitely the way to go,” Dr Shotter says. “Collagen works from the inside out, providing your skin with the building blocks it needs to support structure, firmness and a healthy glow.”

Combining topical skincare with nutritional support can therefore be a more effective approach to maintaining healthy skin.

Why hydrolysed collagen is used in supplements.

Not all collagen supplements are formulated in the same way. Experts explain that collagen must be processed in order for the body to absorb it effectively.

As Dr Dave Reilly explains, “At Absolute Collagen, we hydrolyse our collagen, which essentially is about breaking it up into smaller peptides that can get into the bloodstream and are easier for the body to absorb.”

Hydrolysed collagen is designed to provide the body with collagen peptides that can be utilised more efficiently once consumed.

The formulation used in Absolute Collagen also focuses on ingredient quality and purity. As Dr Reilly says, “We use the most advanced and effective form of marine collagen available, known for its particularly high purity.”

Each sachet delivers 8,000mg of premium, hydrolysed marine collagen together with vitamin C - a nutrient that supports collagen processes in the body.

The importance of clinically tested collagen.

Clinical evidence plays an important role in evaluating collagen supplements.

Dr Reilly adds, “We ran the UK’s largest, most robust clinical trial of a collagen supplement ever.”

The trial included 130 participants over 12 weeks and generated more than 30,000 data points to assess results.

“The trial was independently run and tested against a placebo,” says Dr Reilly. “That means we tested against people who weren’t taking the collagen.”

The results demonstrated measurable improvements in skin appearance. According to the experts, participants reported visible improvements in wrinkles and skin elasticity after consistent use.

Importantly, the research has also undergone peer review. As Dr Reilly notes, “Independent experts have assessed the quality of the work and approved it.”

Supporting hair health from within.

Collagen’s role in the body extends beyond skin. Experts also highlight its potential role in supporting hair health.

Hair specialist Eva Proudman explains that hair thinning can be influenced by many factors.

“There are many different factors that can cause hair thinning or loss. Some of the most common that we see are diet, stress, gut health, hormones, medications and the environment.”

Because hair follicles rely on nutrients and amino acids, nutrition can play an important role.

As she explains, “By taking a supplement such as Absolute Collagen, you’re supporting the hair follicle from within by providing essential amino acids to produce great hair and a balanced scalp.”

Experts also emphasise that supplements should be combined with a balanced diet and professional advice where needed.

Why collagen consistency is key.

Collagen supplementation works best when it becomes part of a consistent routine. Experts highlight that regular intake is important to support the body over time.

As Absolute Collagen’s resident nutritionist Jenna Hope explains, “Diet, hydration and lifestyle habits such as sleep and stress management all contribute to overall skin health.”

Maintaining these habits alongside collagen supplementation helps support the skin’s structure and overall wellbeing.

For many people, taking a daily collagen supplement becomes a simple step that supports their broader skincare and wellness routine.