Celebrities are well known for their less than conventional beauty and health habits. From placenta facials (Harry Styles) and foreskin serums (Oprah – yes, really) to regular leeching sessions (Demi Moore) and vampire facials (Kim Kardashian, of course), it can quickly make your cleanse-and-wipe beauty regimen seem a little, erm, simple.

Which is why it’s so refreshing – and surprising- when a celebrity we admire shares some health and beauty advice that is actually achievable AND affordable. Yes – it happens.

So forget the wacky and bizarre, here are six celebrity health and beauty tips you can use right now.

1. Exercise has more than physical benefits.

Traditionally, talk of exercise has always focused on the physical benefits, but as Lena Dunham has found, it can have a seriously significant impact on your mental health too.

“It has helped with my anxiety in ways I never dreamed possible,” she wrote on Instagram.

“To those struggling with anxiety, OCD, depression: I know it’s mad annoying when people tell you to exercise, and it took me about 16 medicated years to listen. I’m glad I did. It ain’t about the ass, it’s about the brain.”

Dunham goes for acroyoga, but any kind of exercise from running to dance to netball can have the same effect.

2. Stay hydrated.

It’s free, it’s plentiful – and Cameron Diaz swears by it as the secret to feeling and looking good.

“Every night before I go to sleep I fill up a big glass bottle with water and put it on my bathroom counter. First thing in the morning, I drink it and I feel it immediately,” Diaz told the Daily Mail.

“I become bright and vibrant again, my eyes and nose become moist, my throat doesn’t feel dry and scratchy any more, and best of all, the water kick-starts my digestive tract.”

While it may seem simple, staying hydrated has a sea (sorry) of health benefits, including a clearer and happier mind, helping your digestion, keeps skin looking healthy and leaves you feeling energised and ready to tackle anything.

3. Moisturise – always.

When you get home after a long day, it can be tempting to forgo everything and just fall into bed.

But if you can gather up the strength to do just one thing, Demi Moore says to make it moisturising.

“I moisturise, moisturise, moisturise. No matter how late it is, when I get home, I take the time to clean and moisturise my face,” Moore told Marie Claire.

“I’m a big believer in that if you focus on good skin care, you really won’t need a lot of makeup.”

4. Start the day off right.

According to Miranda Kerr, a health body and mind starts from the moment you wake up.

“I always start my day with hot water with lemon, and then I’ll have a green juice,” she told Vogue. (Post continues after gallery.)

“Then I’ll have eggs or avocado on a piece of gluten free toast. After that I’ll have a smoothie with my chia seeds, goji berries, raw cacao – I put all my vitamins in there. That way I don’t have to take all my vitamins separately.”

5. Don’t be afraid to mix your beauty routine with your workout.

Given we’re always short for time, we love anything that’s multi-tasking or time-saving, and Cindy Crawford has just the trick.

“Since I know I’ll be washing my hair right after I exercise, I put a pre-wash conditioner in my hair – especially on the ends. A greasy ponytail during a workout never hurt anyone,” she revealed to Into The Gloss.

And it doesn’t stop there – Crawford also applies healing ointments to her feet during workouts to take advantage of the fact she’ll be wearing socks for a while. Genius.

6. A simple trick to make your lipstick last longer.

Sick of applying lipstick only to have it fade and disappear within the hour? One makeup trick Taylor Swift has picked up along the way is how powder can make any lipstick seriously long lasting.

“Put on the lipstick, blot it with a tissue, then put powder over the tissue and sort of press it onto your lips. Then re-apply. It turns it into a stain that lasts much longer,” she told Allure.

What beauty tip have you learned from a celeb?