Reese Witherspoon shares her 'secret weapon' to looking years younger at 47

The 47-year-old is no stranger to posting stunning selfies online and her skin is always glowing.

She has opened up about her skin care and the products that are in her daily routine.

Reese credited a good eye cream and a plumping serum by Squalane + Copper.

She said: "It’s literally my secret weapon because it uses this really innovative hyaluronic acid complex that makes my skin so hydrated and so plumped.”

Hyaluronic acid is a great ingredient for keeping the skin looking healthy.

It can help keep the skin hydrated and plump which, in turn, makes it appear more youthful.

Studies have shown creams that contain the ingredient can reduce the depth of wrinkles around the lips and eyes by 10 to 20 per cent, according to Everyday Health.

Using a product with the ingredient for three months can also improve skin tightness by 13 to 30 per cent, it added.

Skin care rich in hyaluronic acid could be most beneficial when used during the winter as this is when the skin is particularly dry.

Reese said she will regularly use eye cream, which can have a range of benefits.

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An eye cream can reduce the signs of wrinkles around the eyes as well as help dark circles and puffiness appear less obvious.

Celebrities will often maintain a glamorous look and, luckily, many have shared the secret to how they do this.

Nicole Kidman spoke about what she "always" does for glowing skin at 56.

She explained her "simple" skin care routine consists of two staple products.

Lisa Snowdon spoke about the free daily hack she uses for glowing skin.