20 Beauty Lovers Tried The TikTok-Viral Colgate Optic White Purple Serum, Here’s Their Take On Whether It’s Worth The Hype

Say what you want about TikTok, but it can be a treasure trove of truly legit finds that does exactly what it promises and is just as fun as it looks in those short-form videos. Exhibit A: the viral Colgate Optic White Purple Serum.

You read that right - it’s a serum for your teeth! After brushing your teeth with toothpaste, pump out the lusciously purple serum for a two-minute brush, and voila, it leaves your teeth noticeably whiter.

How It Works

It’s basic colour theory! When purple and yellow, two colours at the opposite end of the colour wheel, collide, they neutralise each other. It’s why there are purple concealers to counter sallow complexions, and purple shampoos to prevent brassiness in bleached hair. Following that same theory, the Colgate Optic White Purple Serum features the ultimate shade of purple that offers superior colour correction, instantly colour-correcting yellow tones in the teeth.

We mean ‘instant’ with a capital I; it works after just one use. And despite how effective it is, it’s enamel-safe and can be used daily. The cherry on top? It retails for just $27.90 for one 40ml bottle.

Tip: Use the Colgate Optic White Purple Toothpaste first, then use the serum for an additional whitening boost and extra shine.

20 GirlStyle readers were just as curious to know if the Colgate Optic White Purple Serum would make their yellow teeth whiter. We sent it to them and after using the serum for just three days, they were sold!

Seeing is believing, so here’s the full list of testimonials, or keep scrolling for a peek at some of their before and after results*:

Testimonials

Chloe

Photo from GirlStyle Singapore

Whether I’m heading out for a special event or just want to freshen up my smile for the day, this serum is an easy, quick fix for that instant whitening boost. After just a few uses, I noticed a significant difference in the appearance of my teeth. The results were immediate, and the best part is, it doesn’t take a lot of product to achieve noticeable results. 

The pump design makes it incredibly convenient and hygienic to use. But what I love most about it is that it’s enamel-safe and designed for daily use, so I can safely incorporate it into my regular oral care routine without any worries. 

Reiko

Photo from GirlStyle Singapore

I love that the sleek and modern pump bottle packaging was more innovative as compared to the usual squeeze tube. The pump made it easier to dispense and it feels like I can get every drop out of the bottle.

While using it, my first impression was that it doesn’t lather, is easy to rinse out and doesn’t irritate my teeth or gums at all.

I noticed that my teeth became brighter immediately, after just one use! As a user of the Colgate Optic White Purple Toothpaste, I feel like this would be a great addition to my beauty routine. I would recommend this product to people who want immediate results and on-the-go teeth whitening. This is now my holy grail for special occasions, like CNY or job interviews, where I want to look my absolute best!

Maeva

Photo from GirlStyle Singapore

As someone who has struggled with yellow stains on my teeth for years, I was eager to try this serum to see if it could help. After using it consistently for a week, I noticed subtle improvements in the whiteness of my teeth. While the results were not dramatic at first, they did seem to build up gradually.

One of the things I really appreciate about this product is its gentle formula. It does not have a gritty texture or an overpowering smell. It’s also smooth and easy to apply.

Si Han

Photo from GirlStyle Singapore

I’ve always been skeptical of teeth-whitening products as my teeth have stubborn tea stains that I thought could not be fixed, but this serum managed to make an improvement to it after the first use. I’m sure the results will be even better once I keep using it consistently.

The gooey texture adheres well during application, and after rinsing it off, my mouth has a minty fresh feeling. It’s an affordable and less time consuming alternative to teeth whitening services at clinics. It also comes in handy when I have last-minute events or dates where I want to look more presentable with a whiter smile. 

Meredith

Photo from GirlStyle Singapore

My teeth are naturally yellow and I drink a lot of coffee and tea every day, so that has made it even more discoloured over time.  But after only the first application of the serum, I immediately noticed that my teeth became whiter. This whitening effect became more obvious after using the purple serum for a few days consecutively. The mint and yuzu flavour also tasted amazing and left my mouth with a lasting refreshing sensation even after rinsing it off. 

It's my first time trying any teeth whitening product and I have to say that it has been a very pleasant and fuss-free experience for me - just Pump, Brush, and Smile. serum, I'm finally able to have a whiter smile! And for someone who loves to laugh and smile a lot, it's a huge win for me!

Elizabeth

Photo from GirlStyle Singapore

I have always been obsessed with having white teeth, influenced by the Korean actors and actresses on Netflix who always seem to have perfect smiles. After discovering the Colgate purple serum, I feel like my journey to a whiter smile has truly leveled up. I would simply call it a liquid confidence-booster for my smile.

The entire 2-minute experience of using this purple serum was exciting, from the premium packaging and slight minty sensation to fluid texture and the simple novelty of the purple hue. It’s quick and easy to use, perfect for multi-tasking - I was swiping on TikTok while brushing my teeth with the serum! It seemed to cancel out the yellowness of my teeth and made me feel even more confident.

This is just a tiny peek at GirlStyle readers’ thoughts on the Colgate Optic White Purple Serum. Check out the full line-up of testimonials here.

Ready to give yourself a whiter smile? The Colgate Optic White Purple Serum is now available islandwide online and in stores: Colgate’s TikTok shop, Guardian, LazMall, NTUC FairPrice supermarkets, Shopee Mall and Watsons for $27.90 (40ml).

*Reviews have been edited for length and clarity.

This post is brought to you by Colgate.