'There are so many great beauty products on sale. Here are my best recommendations under $100.'

The best part about a beauty sale is that feeling when you score a product you already love - or have been low-key stalking online for months - for a fraction of the price.

And guess what… if you've been waiting for that feeling to kick in, now is the time.

WATCH: Leigh Campbell takes you on a tour inside MECCA's newest location (which is also the world's biggest beauty store.) Post continues below.

Yep, some of the biggest brands and cult-favourite products are seriously discounted, and I couldn't resist not sharing it with you.

So, I've rounded up the beauty buys I personally swear by — all currently on sale in Australia.

Some of these are holy-grail products I've been loyal to for years, others are newer obsessions that I'd still pay full price for (but happily won't right now).

Whether you're restocking a ride-or-die or finally trying that thing you've been too scared to splurge on, consider this your permission to treat yourself.

After all, girl maths tells me you're basically making money. Right?

14 best beauty products to buy on sale in Australia.

Images: Adore Beauty.

Vida Glow Liquid Collagen Skin + Gut, $60 (down from $75).

I've been religiously taking Vida Glow's original Liquid Collagen since it launched, and now they've just dropped one with gut health benefits.

Of course, I clicked add to cart immediately — and alongside the skin perks, I've noticed a big change in my digestion (bye, chronic bloat). Bonus: it tastes ridiculously good. If you've been on the fence about ingestible beauty, let this be your sign to stock up (but please leave some for me).

Laneige Lip Sleeping Mask Berry 20g, $24.80 (down from $31).

This cult-status lip mask delivers lusciously smooth, plump, shiny lips and smells divine.

That's it. That's the review.

Images: Adore Beauty/Can Gro.

Kerastase Nutrive 8HR Magic Night Hair Serum 90ml, $73.60 (down from $92).

The ultimate overnight hair treatment. Pop it in before bed and wake up to softer, smoother hair without the greasy residue.

Long Lashes Eyelash Enhancer, $79 (down from $99).

I first stumbled across this serum when I was in desperate need to recover from a very bad lash extension allergic reaction that left me completely lash-less.

And guess what? My lashes grew back longer and thicker than ever before after religiously applying it morning and night for a few months. Plus, it's Aussie-made and all natural.

Image: Adore Beauty/Lila Beauty.

Estee Lauder Advanced Night Repair Synchronized Multi-Recovery Complex 50ml, $159.20 (down from $199).

I'm sorry this one is technically over $100 but it's such a decent discount I had to include.

The OG anti-ageing serum that actually deserves the hype. Expect deep hydration, smoother texture and more glow.

VT Cosmetics Reedle Shot 300 50ml, $42.95 (down from $65).

A gentle at-home needling treatment that boosts absorption of your skincare.

Think glow-up without the downtime… or price. You can read my full review of the product here.

Images: Mermade/Myer.

Mermaid 32mm Original Pro Waver, $81.75 (down from $109).

I absolutely love using my Mermaid waver to create those fun beach waves in minutes.

Giorgio Armani Luminous Silk Foundation 30ml, $90 (down from $120).

Makeup artists and celebs have sworn by this foundation for years — and I have to admit that it's worth the price tag.

The result is flawless, buildable coverage that looks like your skin on its best day.

Images: The Iconic/Adore Beauty.

Clinique Moisture Surge 100H Auto-Replenishing Hydrator 75ml, $62.25 (down from $83).

This ultra-lightweight oil-free gel-cream has been proven to provide an immediate 174 per cent moisture boost.

It's the perfect trans-seasonal option, especially for sensitive skin types that are prone to clogging.

K18 Leave-In Molecular Repair Mask 50ml, $93.45 (down from $109.95).

This mask literally reverses chemical and physical hair damage by repairing keratin in each strand.

I owe my life to it after accidentally burning my hair over a candle one tipsy night (not my finest moment).

Images: Adore Beauty.

Biodance Bio-Collagen Real Deep Mask 4pk, $30 (down from $37.50).

Those viral overnight masks that leave you glowing come morning? These are them.

And yes, they work.

Black Chicken Remedies Copper Tongue Cleaner, $9.60 (down from $12).

Once you start tongue scraping, you'll wonder how you went without it.

Images: Lila Beauty/Chemist Warehouse.

Beauty of Joseon Revive Eye Serum: Ginseng + Retinal 30ml, $15.95 (down from $25.50).

I've used this for over 10 years and it's never let me down (nor the many people I've recommended it to).

It uses encapsulated retinal for better stability, deeper absorption and less irritation.

La Roche Posay Cicaplast Baume B5+ 100ml, $29.99 (down from $42.95).

It's the tube everyone needs in their stash. It tackles dry patches, chafe, post‑treatment redness and flakes, plus it's non‑comedogenic and gentle enough for the whole family.

And although already a budget-friendly product, it's now even more affordable.

Have you used any of the above products? Share your thoughts with us in the comments section below.

At Mamamia, we independently curate and write about products we rave about in our group chats and think you should know about too. If you purchase a product we have recommended, we may earn a small commission.

Feature image: Supplied.