A woman in the bathroom with a tooth whitening gel set, three tooth whitening syringes

Teeth whitening experience - mouth with before and after picture of white teeth

Teeth whitening experience Diamond Smile - Mouth with before picture After picture of white teeth

Teeth Whitening Gel

£19.99

The patented, peroxide-free teeth whitening gel uses a highly effective formula developed by dentists. So you’ll feel no pain during whitening and your teeth are naturally remineralised. Use it for a professional, at-home whitening experience.

Natural, gentle whitening directly on the tooth—without irritating enamel or gums.

6 to 9 applications
99.1% positive reviews
Peroxide-free formula
Money-back guarantee
Free shipping

Over 13,472 purchased in the last two months.

Natural, gentle whitening directly on the tooth—without irritating enamel or gums.

6 to 9 applications
99.1% positive reviews
Peroxide-free formula
Money-back guarantee
Free shipping

Description
Reviews (30)
Ingredients
Shipping
FAQ

The popular Diamond Smile® whitening gel makes teeth up to 21 times whiter than standard strips or toothpaste. It effectively and gently removes stains caused by food and drink. It is especially effective on marks from coffee, tea, soft drinks, wine, sweets and tobacco.

DiamondSmile is loved by over 575.000 satisfied customers worldwide.

Thanks to its professional formula, you’ll achieve whitening up to seven times faster than with conventional teeth-whitening gels so you see visible results sooner and enjoy a brighter smile.

The whitening gel delivers a thorough, even lift without leaving patches, giving you uniform whitening across your whole smile and a flawless finish.

Another advantage is its long-lasting effect: teeth stay whiter for up to three times longer than with typical products, so you can enjoy your bright smile for longer before reapplying.

Anna U.

Now I smile much more often because I feel much more comfortable. I've always been insecure about my slightly discolored teeth. But this tooth whitening gel has finally given me back my self-confidence. My teeth are now much brighter and I can smile much more often.

Stefanie M.

This whitening gel has helped me very well to whiten my teeth again. It is easy to use and after about 2 weeks I have already seen a clear difference. My teeth are visibly whiter without becoming sensitive. Absolutely recommendable!

Miriam A.

I am really impressed with how well this gel works. I drink a lot of tea and therefore have slight discoloration but after just a few applications I could see my teeth getting lighter. Unfortunately still a bit too expensive.

Lisa H.

I like to use the product before going to sleep. It continues to work during the night after rinsing. My mouth always looks very fresh and healthy. And in the morning I can see the result in the mirror with satisfaction. After a week of five applications, my teeth have already become 3 shades lighter and I even have half of the gel left. You should definitely give it a try!

Sophia O.

My teeth are really getting brighter and brighter. I use the gel on my teeth once a day before going to bed and leave it to work. I can already see the first results. I am satisfied and can really recommend the gel!

Adrienne M.

Honestly, how great is this product? I've been using it for a little over a week now in consultation with my dentist and I'm just as surprised as she is. We never thought it would really work. My teeth have become 2 levels lighter and I am neither more susceptible nor do I have any pain.

Julia B.

My girlfriend and I got the set with the lamp once and each got a box with the refill gel. It was great for both of us and our teeth are now brighter again. We will definitely buy it again.

Olaf K.

The gel is really effective and the great thing is that it is not a cold or heat treatment. So my teeth don't hurt afterwards either :)

Lena K.

My girlfriend and I got the set with the lamp once and each got a box with the refill gel. It was great for both of us and we now have brighter teeth again. We will definitely buy again.

Philip H.

I have tried a few products to whiten my teeth and this kit is by far the best. For this reason, I have also ordered the gel again because I do a bleaching application every Sunday.

Tobi A.

It helped me a lot and that's why I also bought the refill box. The design is also really nice and looks great in the bathroom with the kit!

Maxim W.

After being so sceptical at the beginning, I have now even ordered the refill set. I can only recommend.... try it out!

Karsten W.

I got the kit for Christmas and am so convinced that I reordered the gel today. Great packaging and beautiful presentation.

Fin E.

It's a shame that I only ever manage 8 applications with it, but it tastes better than all the neutral variants and is also cheaper. Clear buy recommendation

Jana E.

Anyone who gets the kit should definitely also get the gel, so that you can also make applications over a month.

Justin R.

Since I am very convinced of the taste in contrast to many neutral others, I immediately got it again. So 100 times better than the standard gel

Marcel E.

I am quite satisfied. The teeth are definitely getting brighter!

Gerda O.

Unfortunately, you need the set for the gel. At least if you want optimal results. So I had to buy the set in addition. Effect is fine and my teeth have become brighter.

Julia E.

I use this for lightening my teeth, finished the ones I had, this is a new order. Easy to apply, tasteless and easily rinsed off.

Rita W.

Works great. Find it only a bit of a shame that you give the gel directly into the attachment and not on the teeth. Otherwise super.

Dan E.

All the best- taste is good, brightening is as expected.... Good ! Price performance is also ok !

Ellen L.

Wow, I am really thrilled! I can only recommend it!

Vanessa P.

I do a treatment every three days in the evening with my boyfriend and we are satisfied. The gel is tasty and works better than expected.

Anne K.

It's nice that there's finally a box to go with it. I was already excited about the kit from the beginning.

Lara D.

I bought the gel so I can use the set longer and replenish the bleaching pen. I am very enthusiastic about both. Cool idea with the refilling of the products

Max D.

Since I am very convinced of the taste in contrast to many neutral others, I immediately got it again. So 100 times better than the standard gel

Claudia W.

It's a shame that I only ever manage 8 applications with it, but it tastes better than all the neutral variants and is also cheaper. Clear buy recommendation

Sarah T.

I got the kit for Christmas and am so convinced that I reordered the gel today. Great packaging and beautiful presentation.

Ethan B.

My girlfriend and I got the set with the lamp once and each got a box with the refill gel. It was great for both of us and we now have brighter teeth again. We will definitely buy again

Christina S.

Finally, the gel is also available like this. Last time I had to order the set again because I ran out of gel haha

Glycerin: Releases oxygen and removes discoloration through concentrated oxidation.

Propylene glycol: Powerful binding agent that removes dyes and pigments from tooth enamel.

Sodium chlorite: Effective and safe active for lightening intrinsic tooth discoloration.

Glycerin, Water, Propylene Glycol, Xanthan Gum, Sodium Metasilicate, Cellulose Gum, Flavor, Sodium Chloride, Sodium Dehydroacetate, Xylitol, Phenoxyethanol, Sodium Chlorite, Sodium Bicarbonate, Disodium EDTA

At checkout, you can choose between our two available shipping options: Standard Shipping and Express Shipping to United Kingdom.

1. Standard Shipping

Royal Mail – Free – 3 to 5 days

2. Express Shipping

Express (DPD) – £4.95 – 1 to 2 days

Additional Information

Our dispatch times may vary. Once your order is placed, it takes up to 24 hours for your parcel to leave our warehouse.
We ship all open orders daily via Royal Mail / DPD.

* Any customs duties or local taxes must be paid by the recipient.
Shipping costs and VAT depend on your location and may initially appear as estimated values in the cart. These will be updated and shown accurately during checkout before completing your purchase.

What do I need the refill gel for?

You need the refill gel when the teeth-whitening gel in your bleaching kit runs out. It’s always a good idea to purchase a refill set together with the teeth whitening kit to carry out a longer and more sustainable whitening routine.

How does the at-home teeth-whitening set work?

Through oxidation on the enamel, discoloration and stains on the tooth are naturally removed and the tooth is lightened.

How can the bleaching effect be improved?

Improve and extend the bleaching effect with our activated charcoal. By using it before bleaching, your teeth become even brighter, as the charcoal can already remove coarse discoloration.

How many applications does the gel last for?

Each gel syringe allows for 3–4 applications. We always recommend buying a refill gel with the teeth-whitening set so you can carry out a long-term treatment.

How long do teeth stay white after use?

The whitening effect of the bleaching set usually lasts 1 to 2 years. After use, you should continue to take good care of your teeth.

Is the bleaching set safe?

The DiamondSmile bleaching set has been approved, tested and certified in Germany (certificates: CE, FDA, ISO, MSDS). We also recommend visiting your dentist for a professional cleaning and to get advice on whether your teeth are suitable for a home bleaching set.

Is teeth whitening at the dentist better?

Dentists generally use the active ingredient hydrogen peroxide or carbamide peroxide. Both can strongly affect tooth enamel and gums and cause pain.

Will the bleaching set even work for me?

The active ingredients in our gel were developed to act directly on the tooth regardless of the condition of the teeth.

Why do we work without peroxides?

Peroxides are highly acidic and can attack your teeth, enamel and gums. This usually leads to tooth sensitivity and can cause irritation. For this reason, we do not use peroxides in our products.

BENEFITS

Tested

Visible whitening without harming enamel.

Simple

Uncomplicated, lightning-fast refilling.

Highly Effective

Reliable whitening up to 11 shades lighter.

White Teeth

For a radiantly white smile from home.

Extra-strong

Power teeth whitening with strong whitening performance at home.

Vegan

Natural, safe & tested ingredients.

How does it work?

Professional teeth whitening at home

Professional formula

7x faster whitening than conventional teeth whitening gels
Thoroughness

Whitens your teeth evenly without leaving stains
Long-lasting

Your teeth stay white 3x longer than with conventional products

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Our promise: quality from the start.

THE PRESS LOVES DIAMOND SMILE

"Teeth whitening is remarkably quick and easy with the Diamond Smile Whitening Kit."

"The intensive teeth whitening treatment from Diamond Smile was a pleasure for all participants in our test."

"That's why Diamond Smile’s products are particularly innovative [...] and meet the highest standards."

"Teeth whitening is remarkably quick and easy with the Diamond Smile Whitening Kit."

"The intensive teeth whitening treatment from Diamond Smile was a pleasure for all participants in our test."

"That's why Diamond Smile’s products are particularly innovative [...] and meet the highest standards."

MONEY-BACK GUARANTEE

We offer a risk-free 14-day money-back guarantee for our teeth-whitening products. If you do not have at least two shades whiter teeth, contact us and you will receive your money back.

(For further information, see the Terms and Conditions.)