They say the best things in life are free, but when it comes to beauty products that’s a fairly rare occurrence (unless you shoplift, and… well, please don’t do that).

Thankfully, there are some brilliant budget products out there that’ll give you groomed brows/lush lashes/happy-looking skinandchange from a $20 or $10 note — even a fiver in some cases.

Here are some of the wallet-friendly beauties Aussie celebrities have shared withMamamia.

Ricki-Lee Coulter

Following an expert recommendation, the pop star has been using Cetaphil Intensive Moisturising Cream ( $9.99) regularly.

"I have really dry skin and was having problems for a long time so I went to see a dermatologist and this was what she recommended. My skin has never been better, so I never skip this routine," she said.

Sam Frost

Images: Priceline/Instagram.

The radio host and former Bachelorette is a fan of Maybelline's Volum’ Express The Colossal Smoky Eyes Mascara ( $13.96), explaining, "I pop this on and use an eyelash curler for extra volume."

Like many a famous (and non-famous) face, she's also a convert of Lucas’ Papaw Ointment ( $5.99).

"I’m never without this. It just works and can be used all the time. Sometimes all I wear on my lips is Papaw and a little lipliner," Sam said.

Gallery: Some of the other celebrities who swear by Lucas' Papaw Ointment. (Post continues after gallery.)

Celebrities who swear by Lucas' Paw Paw ointment

Cate Blanchett

Rosie Huntington-Whiteley's chicken recipe

Alexa Chung

Robyn Lawley

The Aussie model's go-to, multi-use product can be found in the supermarket (or already in your pantry if you're lucky).

Images: Instagram/Woolworths

“Use extra virgin raw coconut oil ( $16.99 at Woolies) - or olive oil - as a makeup remover. It’s super cheap. I use it in the shower," Robyn toldMamamia.

"So if I’m ever without face wash I just go to the kitchen and grab some oil. It’s the best thing to take off eyelash glue, it’s the far easiest thing to use. Put a hot towel over your face and you’re done in two seconds.”

Rachael Finch

Images: Amcal Pharmacy, Getty

The model is a master of the budget buy — many of her day-to-day products cost less than $10.

"When it comes to my skin, I use a cream cleanser each morning - the Skin Theory brand ( $10) in Amcal Pharmacy is my fave. I also curl my lashes then use Colour Theory Mascara Plump ( $8)," she toldMamamia.

Listen: Rachael Finch talks us through a typical day in her life. (Post continues after audio.)

"I carry a lip balm with me everywhere. I like the Carmex jar balm ( $5.99). I never know when my lips will need rehydrating, in between the sun, air conditioning or heating systems."

Ada Nicodemou

Images: Coles, Instagram, Priceline

You'll never find theHome and Awaystar without Nivea's Essential Care lip balm — along with perfume and mints, it's a product she "never leaves the house without", she told us.

Ada also swears by Palmolive Oil Infusions Body Moisturiser ( $9.99 from Coles and pharmacies) as part of her everyday routine.

Jesinta Franklin

Images: Olay, Instagram

Spending much of her time wearing makeup, the model says she's a "'get home, wash all my makeup off' kind of girl", and often employs a double cleanse technique to ensure she removes it all.

"I use Olay Total Effects Foaming Cleanser ($9.69) first followed by the Cream Cleanser ( $9.69). The double cleanse leaves my skin feeling extra clean and fresh," Jesinta toldMamamia.

Laura Dundovic

Images: Instagram, Priceline

The model and presenter toldMamamiaa compressed, translucent powder is one of her makeup bag staples. And one of her top picks is just $12.95.

"Just use it on your T-zone and it'll make your makeup last all day without caking up. There's a really great one you can get from Rimmel ($12.95), that's a good cheap one," she said.

Rebecca Judd

Images: Instagram/Maybelline

What's a list of budget beauty wonders without Maybelline's best-selling Great Lash mascara ( $12.95)? Rebecca Judd names it among her favourite cheapie products, so there's all the incentive you need to give it a whirl.

What's your favourite budget beauty buy?