Cel mai bun colagen has gone from being a buzzword to a beauty essential in recent years, with everyone from Jennifer Aniston to Amazon’s ELEMIS pro-collagen cleansing balm jumping on the bandwagon. But not all collagen is equal – the best ones are formulated to help you boost your natural levels and promote healthy hair, nails and skin.

“Look for the words ‘grass-fed,’ ‘pasture-raised’ or ‘wild-caught’ on the label,” says Dr Bisma Hussain, who specialises in genetics, biohacking and regenerative medicine. These are good indicators that the supplement is free of hormones and toxins.

The Best Collagen: Top Supplements for Healthy Skin & Joints

Angiolini recommends checking the label for a wide range of nutrients that work in synergy with collagen to promote healthy cells, such as vitamin C, hyaluronic acid and biotin. He also suggests looking for a third-party testing certification, as this is an indication that the product has been tested for purity and potency.

Finally, make sure the collagen is in a form that can be absorbed. This includes products that are hydrolysed, which means they’ve been broken down into smaller molecules called peptides so the body can absorb them more easily.

Finally, don’t forget to top up your diet with whole foods that support healthy collagen levels, such as protein (from meat, fish and eggs), fatty fish such as salmon and trout, sweet potatoes, avocados, kale and strawberries (vitamin A and C), nuts and seeds (protein), spinach, broccoli, chickpeas, chia and flaxseeds (fiber) and dark chocolate (vitamin B6).