From serums to light masks: 30 women on the beauty product that's changed their appearance.

You know what's cool? When you use a beauty product and it *actually* does what it says it'll do. How good is that?! Rare, but delightful.

Watch: Mamamia roadtest cult viral beauty products to see if they actually work. Post continues below.

To help cut out all the noise (and there is A LOT of fluff out there), we asked a bunch of women for the one product they've used that's noticeably changed their appearance.

Get those bank cards ready, friends.

Eleanor - Kiehl's Ultra Facial Cream, $51.

"The only face moisturiser I've actually used that I've seen has made a visible difference to my skin. All the others I've ever used have made my skin feel hydrated, but this is the only one that I have noticed leaves my skin GLOWING. I've gotten compliments on my skin when just wearing this... and that never used to happen!"

Listen: Been trying to find a good moisturiser for zonks? Same. Check out this episode of You Beauty, where Leigh and Kelly dish out their faves. Post continues below.

Image: Kiehl's Ultra Facial Cream 

Jessie - Beaute Pacifique Super 3 Booster Night Cream, $104.

"This. And it's all Leigh Campbell's fault. And it's too expensive. And I wish it didn't work, but it does. It's anti-ageing and visibly reduces  fine lines and pigmentation."

Image: Beaute Pacifique Super 3 Booster 

Polly - Alpha-H Liquid Gold, $60.

"I use it at night and wake up every morning with new skin."

Image: ALPHA-H Liquid Gold 

Georgia - Elizabeth Arden Eight Hour Cream Skin Protectant Original, $28.

 "Nothing else works this well on my dry/flaky lips!"

Image: Elizaqbeth Arden Eight Hour Cream Skin Protectant Original 

Sarah - Aduro Personal LED Mask, $499.

"My pigmentation has reduced and my skin is brighter."

Image: Aduro LED Mask 

Katie - Kiehl's Lip Balm #1, $16.

"This s**t is bliss. It's the only lip balm that has ever properly nourished my lips for longer than 30 seconds. This may be slightly my fault as a I have a tendency to subconsciously eat off my own lip balm - but this one still delivers the goods even when that happens! How? Probably magic/Kiehl's scientists being utter geniuses. Oh also, it has to be the cranberry one. It's like (British) Christmas Day on your face."

Image: Kiehls Lip Balm #1 

Jessica - NeoStrata Resurface Lotion Plus, $63.99.

"I use this to reduce the appearance of Keratosis Pilaris."

Image: NeoStrata Resurface Lotion Plus 

Anisha - NIOD Fractionated Eye Contour Concentrate, $100.

"This definitely reduces the fine lines under my eyes (I'm on my first bottle) - my concealer has stopped creasing."

Image: NIOD Fractionated Eye Contour Concentrate 

Kirrily - Dr Dennis Gross Spectralite Faceware Pro, $696.

"I am 45 and never ever spent this kind of money on face care - but for a variety of reasons decided to give it a go. There has absolutely been a difference in the appearance of my skin. I have used it every night and my skin has tightened and my hormonal red chin has improved. My husband has commented on what a change it has brought. Did not regret this purchase at all! I am also using it on my twins' faces for pimples etc. (There are three different settings)."

Image: Dr. Dennis GrossSpectralite Faceware Pro 

Emma - The Ordinary Niacinamide + Zinc, $9.90.

"The first real change I noticed in my skin was when I started using The Ordinary Niacinamide + Zinc in a 'basic' skin care routine - I saw some really quick results."

Image: The Ordinary Niacinamide 10% + Zinc 1% 

Tam - PeppyCo LED Light Therapy Mask v2, $179.

"When I'm really consistent with using this LED Mask, I find my skin looks clearer and more glowy. It's also a bit more affordable than the other options out there!"

Image: PeppyCo LED Light Therapy Mask V2

Kelly - EyEnvy Eyelash & Eyebrow Conditioner.

"Everyone needs EyEnvy in their life!"

Image: EyEncy Eyelash & Eyebrow Conditioner 

Emmeline - Andalou Naturals Deep Wrinkle Dermal Filler, $29.99.

"I started using this as soon as I started getting lines on my forehead and it worked immediately. It's natural and fairly cheap, too."

Image: Andalou Deep Wrinkle Dermal Filler 

Renny - Imbibe Miracle Collagen, $40.

"I changed nothing else and my skin is way plumper and my eczema is almost non-existent."

Image: Imbibe Miracle Collagen 

Isobel - Emma Lewisham Supernatural Collagen Peptide 72-Hour Crème, $135.

"I've noticed a HUGE difference in my fine lines around my eyes and general plumpness of my skin since I started using this every night. I'd previously been using all Rationale and loved the night cream, but moved to this while I figured out my next steps - and I'm really loving it!"

Image: Emma Lewisham Supernatural Collagen Peptide 72-Hour Crème 

Leticia - LightStim For Acne: LED Light Therapy, $340.

"I love the LightStim handheld LED device. My skin looks so good when I use this consistently."

Image: LightStim For Acne: LED Light Therapy  

Jenny - Revolution Skincare Extra 15% Niacinamide Serum, $20.

"This has got rid of my sun spots and evened out my skin, while also minimising my pores. I’m 42 and my skin is looking great. You can get it in Priceline and it's not expensive. You have to use it morning and night for about six weeks before you see a difference. I’ve been using it for six months now and the results are great."

Image: Revolution Skincare Extra 15% Niacinamide Serum

Cherie - Nioxin 3D System 2 Cleanser Shampoo and Conditioner, $44.

"If you're losing stupid amounts of hair, this STOPS it."

Image: Nioxin 3D System 2 Cleanser Shampoo 

Amena - Sunday Riley UFO Clarifying Oil, $128.

"I can see a massive difference with my acne scars and pores."

Image: Sunday Riley UFO Ultra-Clarifying Face Oil 

Gabrielle - SkinCeuticals CE Ferulic Serum, $218.

"I cannot stop touching/staring at my skin after using SkinCeuticals CEF. My skin is definitely not perfect, but the difference in clarity is really obvious to me - which is great considering the price."

Image: SkinCeuticals CE Ferulic Serum 

Erin - Estee Lauder Advanced Night Repair, $110.

"I've been using this for the last couple of months, and I've noticed such a positive difference in the appearance of my skin. My complexion is clearer, more even and way more hydrated. I've also noticed the fine lines around my eyes (which were getting a little deep for my liking) aren't as visible. I use it morning and night and my skin just looks way healthier with it in my life. Very onboard."

Image: Estee Lauder Advanced Night Repair 

Alana - Virtue Labs Recovery Shampoo and Conditioner, $54.

"I use Virtue Shampoo and Conditioner and find that my hair is less frizzy, more voluminous and healthier."

Image: Virtue Labs Shampoo and Conditioner 

Jessica - Go-To Face Hero Face Oil, $45.

"It took me a while to love Go-To Face Hero (as I didn’t realise my oily skin would benefit from a face oil), but I persisted and now I can’t live without it. It keeps my face so hydrated."

Image: Go-To Face Hero Face Oil 

Erna - Biologique Reserche Lotion P50W, $160.

"It’s my Holy Grail and I can’t live without it!"

Image: Biologique Recherche Lotion P50W 

Ginger - Imbibe Miracle Collagen, $40.

"I love the Imbibe Miracle Collagen! My skin is glowing, and it has helped clear my psoriasis up. My hormonal acne on my shoulders is also less dramatic."

Image: Imbibe Miracle Collagen 

Tamara - Christophe Robin Cleansing Purifying Scrub with Sea Salt, $69.19.

"My old colleague Amy Clark told me about this, and of course she was right. My hair looks so clean and healthy after using it; it actually 'swishes'. Big convert!"

Image: Christophe Robin Cleansing Purifying Scrub with Sea Salt 

Sakari - Lancôme Advance Genefique Serum, $110.

"This is one of the items that I will ALWAYS repurchase and will never be caught without!"

Image: Lancôme Advance Genefique Serum 

Rosie - Ultraceuticals Ultra Balancing Gel Cleanser, $59.

"The Ultraceuticals range! I have seen a massive difference in balancing my oil production and the texture of my skin. I'm still battling some mild acne - but the skin that's not acne affected looks great!"

Image: Ultraceuticals Ultra Balancing Gel Cleanser 

Lara - Innisfree Brightening Pore Serum, $58.

"This has 100 per cent reduced the freckles on my forehead."

Image: Innisfree Brightening Pore Serum 

Dani - Paula's Choice Clinical Niacinamide 20% Treatment, $66.

"I had texture on my cheek, and this was the ONLY thing that got rid of it. I will never be without this now."

Image: Paula's Choice Niacinamide 20% Treatment. 

Feature image: Supplied

What product have you used where you've seen a notable difference in your appearance? Share with us in the comment section below.