Does drinking collagen actually reach your skin? The debate that won't end

From convenience stores to home shopping channels, collagen drinks and powders are everywhere. So is the "it works vs waste of money" debate.

The "it works" side

Some studies are cited as showing better skin hydration and elasticity measures after taking collagen peptides
Plenty of reviews say skin felt less dry after steady use

The skeptical side

The usual explanation is that ingested collagen is broken down during digestion, so it doesn't simply become skin collagen
Critics point out that many studies are industry-funded
Many argue overall diet, sleep and sun protection matter far more

Before you buy

In Korea, check whether it's an approved health functional food and what claim it's approved for
Look at sugar and additive content
If you take medication or have a condition, check with a professional

Where do you land between "no harm in trying" and "I'd rather spend that on sunscreen"?