What Is Protein Water? Does It Work, and Which One Should You Buy?

You've seen it on the shelves, all over your Insta feed, and heard people talking about it at the gym. Protein water. It's clear, it's refreshing, and it promises the protein of a shake without the thick, milky texture. But what actually is it? Is it just another fitness fad, or does it do the job?

We stock more than ten of them at Booty N Buff, so we get asked this every week. Here's everything you need to know: what protein water is, the two main types, whether it works for building muscle, how it compares to a normal shake, and which one to buy.

What is protein water?

Protein water is exactly what it sounds like: protein that dissolves into water to make a thin, see-through drink. You buy most of them as a powder and shake a scoop into cold water. Some come ready to drink in a can or bottle.

The trick is the type of protein. Normal protein powders turn milky and thick in water. Protein water uses proteins that have been broken down or filtered so they dissolve completely, with no chalky texture and no creaminess. The result tastes more like a fruity sports drink than a shake.

Most protein waters are fat free, very low in carbs and sugar, and sit around 90 to 100 calories a serve. Many add extras like electrolytes or vitamin C.

The two main types: collagen protein water vs clear whey

This is the part most people don't know, and it matters. "Protein water" covers two quite different products.

Collagen protein water is made from hydrolysed collagen peptides, usually from cows (bovine). Collagen is the main protein in your skin, tendons and ligaments. It mixes very light, it's dairy free, and it's easy on the stomach. Nexus Super Protein and Cyborg Sport Collagen Protein Water are collagen protein waters.

Clear whey is whey protein isolate that has been filtered and treated so it mixes thin and clear, like juice. It's still whey, the same complete protein that's in a normal shake, just without the creamy texture. Rule 1 R1 Clear and Ghost Whey Clear are clear whey.

	Collagen protein water	Clear whey
Made from	Hydrolysed collagen peptides (usually bovine)	Whey protein isolate (from milk)
Complete protein?	No. Collagen is low in some essential amino acids	Yes. All nine essential amino acids
Leucine (the muscle-building amino acid)	Low	High
Dairy	Dairy free	Contains milk (low lactose, not lactose free)
Texture	Very light, slightly smoother than water	Light and juicy, can foam at first
Best for	Topping up daily protein, dairy-free diets, people who want collagen	Recovery after training and building muscle

A few products, like Inspired Protein Water, blend whey isolate and collagen together, so you get some of both.

Does protein water work?

Yes, every gram of protein counts toward your daily total, and protein water is an easy way to get more of it. If you struggle to hit your protein target, a light drink you actually want to finish is a real help. (Not sure what your target is? Read how much protein per meal you need.)

For building muscle, the type matters. Clear whey is a complete protein that's high in leucine, the amino acid that switches on muscle building, so it does the same job as a normal whey shake. Collagen is not a complete protein and has much less leucine, so on its own it's a weaker choice straight after training.

That doesn't make collagen protein water useless. It still adds protein to your day, and if the rest of your diet has plenty of complete protein (meat, eggs, dairy, a whey shake), collagen protein water is a handy top-up. Just don't make it your only protein source if muscle is the goal.

Building muscle? Pick clear whey. Topping up your protein, avoiding dairy, or just after something refreshing? Collagen protein water is great.

Is protein water good for you?

For most healthy, active people, yes. Here's the good and the not-so-good.

The benefits

• Easy to drink. If milky shakes leave you feeling heavy or bloated, protein water is a game changer. It goes down like a cold drink, not a meal.
• Protein and hydration together. You're drinking 300 to 400ml of water with every serve, and some add electrolytes for sweaty sessions.
• Low in calories, fat and sugar. Around 90 to 100 calories for 20 to 25g of protein makes it easy to fit into a cut.
• Dairy-free options. Collagen protein waters suit people who don't do well on whey.
• Convenient. No blender, no clumps. Shake, let it settle, drink.

The downsides

• Collagen isn't a complete protein. As above, it's not the best choice on its own for muscle.
• Sweeteners. Most use sweeteners like sucralose, stevia or monk fruit. Check the label if you avoid certain ones.
• Foam. Clear whey can foam when you first shake it. Let it sit for 20 to 30 seconds and the foam drops.
• It's not a meal. Protein water is low in calories on purpose. It won't keep you full like a meal or a thick shake with oats.

Is protein water a scam?

No, but some products are better than others, so read the label. Two things to check:

• Protein per serve. A good protein water powder gives you 20 to 25g. Some ready-to-drink bottles from the supermarket have far less, so compare the grams, not the marketing.
• The protein source. Look for "whey protein isolate" or "hydrolysed collagen peptides" near the top of the ingredients, so you know exactly which type you're getting.

Protein water vs protein shake

• Texture: protein water is thin and juicy. A protein shake is thick and creamy.
• Flavours: protein water comes in fruit, lolly and lemonade flavours. Shakes lean to chocolate, vanilla and dessert flavours.
• Mixing: protein water is best with cold water only. Shakes also work with milk, oats and smoothies.
• Protein: about the same. Clear whey gives 20 to 25g a scoop, and most whey isolates give 25g or a bit more.
• Muscle building: clear whey and a normal whey shake are equal. Collagen protein water is a step behind.

Plenty of people use both: a creamy shake in the morning or with oats, and a protein water after training or on a hot afternoon.

When should you drink protein water?

• After training. A cold clear whey after a sweaty session is hard to beat.
• Between meals. An easy protein top-up in the afternoon that won't spoil your dinner.
• On hot days. When the last thing you want is a thick shake.
• During long sessions. Sip a collagen protein water with electrolytes.

How to make protein water

• Use 300 to 400ml of ice-cold water per scoop. Cold water mixes clearer and tastes better.
• Shake well, then let it sit for 20 to 30 seconds so any foam settles.
• Use water, not milk, or you'll lose the clear, juicy texture.
• Make a jug. Mix a litre or two and keep it in the fridge so a cold one is always ready.
• Try sparkling water. Some flavours, like Nexus Super Protein, are great mixed with soda water.
• Add creatine. Unflavoured Essential Creatine mixes straight in and you won't taste it.

Every protein water we stock, compared

Protein water	Type	Protein a serve	Serves
Nexus Super Protein	Collagen	About 21g (90 cal)	30
Cyborg Sport Collagen Protein Water	Collagen	25g	35
Primabolics Complete Collagen Protein Water + Hydration	Collagen, plus electrolytes	21g+ collagen	30
Faction Labs Protein Water	Collagen (bovine, marine and chicken)	20g	30
Onest Protein Water	Collagen, plus acetyl L-carnitine	20g	28
Inspired Protein Water	Whey isolate and collagen	24.3g	25
Zombie Labs Shredz Thermogenic Protein Water	Protein water with a thermogenic blend	23g	25
Rule 1 R1 Clear	Clear whey isolate	20g (90 cal)	27
Ghost Whey Clear	Clear whey isolate	25g (100 cal)	20
Nexus Super Protein Sparkling Water	Collagen, ready to drink	15.5g (65 cal) a can	1 can

Figures are from each brand's label and can vary a little by flavour. Check the product page for the full nutrition panel.

Which protein water should you buy?

• For building muscle: Rule 1 R1 Clear or Ghost Whey Clear. Complete whey protein, just clear.
• Most protein from collagen: Cyborg Sport Collagen Protein Water, with 25g a serve and 35 serves a bag.
• Our favourite taste: Nexus Super Protein. More on that below.
• Protein and hydration in one: Primabolics Complete Collagen Protein Water + Hydration, with added electrolytes.
• A bit of both: Inspired Protein Water, whey isolate and collagen together.
• No mixing at all: Nexus Super Protein Sparkling Water cans, straight from the fridge.

Browse all of them in our collagen range and drinks.

The Booty N Buff taste test

We couldn't just talk about it. We had to try it, so we grabbed one of the most popular protein waters in Australia, Nexus Super Protein.

The experience: Jon here. First off, this stuff mixes perfectly. A few shakes and it's completely dissolved, no grit and no floaties. We tried the Aussie Gummy Snakes flavour, and the smell alone was incredible. It's sweet but not sickly.

The first sip is where you really get it. It's not water, but it's not juice either. It has a smooth mouthfeel that's seriously refreshing after a tough leg day, and the flavour is spot on without any weird protein aftertaste.

But I'll let Raquel give you the final word on the texture.

"Yum, it's like jelly, but like... not jelly." Raquel

She nailed it. That's the best way to describe a collagen protein water: smooth, slightly thicker than water, and really satisfying.

The verdict: protein water is legit. It's a great alternative to milky shakes, especially after training or for anyone who struggles to hit their protein. Nexus Super Protein blew us away. The taste is elite and it's easy on the gut. It's officially a Booty N Buff staple. Today you'll find it in flavours like Pink Lemonade, Passion Mango, Watermelon and Lychee Guava.

Booty N Buff team rating: 9/10.

Protein water FAQ

Is protein water healthy?

For most healthy adults, yes. It's low in calories, fat and sugar, and it helps you get more protein and water into your day. Treat it as a supplement to a balanced diet, not a meal replacement.

Can you drink protein water every day?

Yes. One to three serves a day is common, as long as it fits your total protein and calorie needs. Follow the directions on the label.

Does protein water help you lose weight?

Protein water won't burn fat by itself. What it does is give you 20 to 25g of protein for around 90 to 100 calories, and a higher-protein diet can make a calorie deficit easier to stick to.

Is protein water as good as a protein shake?

Clear whey is just as good as a normal whey shake for building muscle. Collagen protein water is not a complete protein, so pair it with other protein sources if muscle is your goal.

Does protein water have sugar?

Most have 0 to 1g of sugar a serve and are sweetened with sweeteners like sucralose, stevia or monk fruit.

Is protein water dairy free?

Collagen protein water usually is. Clear whey is made from milk, so it isn't dairy free. Whey isolate is low in lactose, but not lactose free.

Is collagen protein water vegan?

No. Collagen comes from animals, most often cows (bovine) or fish (marine).

Can I mix creatine into protein water?

Yes. Unflavoured creatine monohydrate mixes straight in, and you won't taste it. Find out more in our ultimate guide to creatine.

Shop this article

Our taste-test favourite, the collagen protein water with the most protein a serve, and a clear whey for after training. Or browse every collagen protein we stock.

Nexus Sports Nutrition Super Protein From $44.95 Shop now Cyborg Sport Cyborg Sport Collagen Pro Protein Water $89.95 Shop now Rule 1 Rule 1 R1 Clear Whey Isolate Protein $119.95 Shop now

Tried a protein water you love? Let us know your favourite flavour in the comments, or drop into the store and we'll help you pick one.

Stay strong,
Jonathon Dixon
Founder, Booty N Buff