Bulk Clear Whey Isolate
Clear whey exists for one situation: you have just trained, it is hot, and the thought of a milky shake turns your stomach.
- Lean macros
- 80g
- Protein / 100g
- 20g
- Per 25g scoop
- £1.33
- Per 25g protein
- £84.99
- 2.00kg pack
How the numbers stack up against the price
£1.33 buys 25g of protein here, which makes it the 21st cheapest of the 24 powders we have reviewed, behind Warrior Whey at £1.26, and 39p over the median.
On that job this does fine, at 80g protein per 100g with almost no fat, no lactose worth mentioning and 0.4g of sugar. Two things to know. First, the name oversells the filtration: the ingredient list opens with whey protein hydrolysate, which is what makes it go clear, and it is not the isolate the label implies. Second, the serving is 25g rather than the usual 30g, so you get 20g of protein per scoop and the tub goes further on paper than it does in practice. Buy a 500g bag of one flavour before you buy 2kg of it, because flavour is where this product actually fails for people.
Cost per 25g of protein, across our 24 reviews
Median 94p
- Protein Works Vegan Pea Protein - BLACK Innovation39p
- Protein Works Vegan Protein 360 - GOLD Innovation44p
- Protein Works Vegan Protein 360 - PLATINUM Innovation54p
- Bulk Pure Whey Protein70p
- Protein Works Whey Protein 360 - PLATINUM Innovation71p
- Protein Works Whey Protein 360 - GOLD Innovation72p
- PhD Nutrition Diet Whey73p
- NXT Nutrition Beef Protein Isolate74p
- Protein Works 100% Micellar Casein - BLACK Innovation82p
- PER4M Nutrition Whey Protein85p
- PER4M Nutrition Isolate Zero86p
- MyProtein Impact Diet Whey92p
- MyProtein Clear Whey Protein96p
- USN Blue Lab Whey100p
- Bulk Pure Whey Isolate£1.05
- MyProtein Impact Whey Protein£1.09
- MyProtein Impact Whey Isolate£1.22
- Applied Nutrition ISO XP£1.24
- Applied Nutrition Critical Whey£1.25
- Warrior Whey£1.26
- Bulk Clear Whey Isolate£1.33
- Protein Works Clear Diet Whey Protein - GOLD Innovation£1.37
- Scitec Nutrition 100% Whey Protein Professional£1.49
- Protein Works Diet Whey Protein Isolate - BLACK Innovation£1.56
Cheapest in-stock listing at a partner retailer, for packs of 400g and over.
Read the ingredient list before the name. The protein here is whey protein HYDROLYSATE, not isolate: hydrolysate is what makes it dissolve clear instead of going milky. The name is the odd one out on the label, not the powder.
Whey Protein Hydrolysate (Milk), Flavouring, Anti-Foaming Agents, Sweetener (Sucralose).
What the label gets right, and wrong
Strengths
- Genuinely refreshing post-session when milky shakes are unappealing
- 0.4g of sugar and 0.7g of fat per 100g, so it costs you almost nothing on a cut
- Salt is 0.04g per 100g, a fraction of what the concentrate carries
- Mixes in water in a bottle, so it works as a gym-bag drink rather than a kitchen shake
Watch-outs
- Named Isolate, made from hydrolysate. Check the ingredient list if that distinction matters to you
- The serving is 25g, so 20g of protein per shake, not the 24g to 25g you get from a standard tub
- Flavour draws consistent, specific criticism from buyers, more than any other Bulk protein we looked at
- Contains polydimethylsiloxane and silicon dioxide as anti-foaming agents, which is normal for clear whey but new to most people reading the back of the bag
Where to buy it
Ordered by cost per 25g of protein, because pack sizes and protein densities differ enough that a headline price on its own does not tell you which is better value.
| Retailer | Size | Price | Per 25g | Go to retailer |
|---|---|---|---|---|
| Bulk | 2000g | £84.99 | £1.33 | View deal ↗ |
| Amazon UK | 500g | £24.95 | £1.56 | View deal ↗ |
2 partner retailers stock a 400g or larger pack of this product.
Price history
What a scoop actually contains
Taken from the manufacturer’s published label. Source.
A 25g serving, not the 30g most powders use, so 20g of protein per shake rather than 24g or 25g. Compare tubs on cost per 25g of protein, not on price per bag, or this one looks cheaper than it is.
| Nutrient | Per 100g | Per 25g |
|---|---|---|
| Protein | 80g | 20.0g |
| Energy | 343 kcal | 86 kcal |
| Carbohydrate | 4.6g | 1.1g |
| of which sugars | 0.4g | 0.1g |
| Fat | 0.7g | 0.2g |
| of which saturates | 0.4g | 0.1g |
| Fibre | 1.4g | 0.3g |
| Salt | 0.04g | 0.0g |
Ingredients and formulation
Protein sources, in label order
- 01Whey protein hydrolysate (milk)
Sweeteners and emulsifier
Sucralose
Pack sizes
500g · 1kg · 2kg
This is a juice-style drink, so flavour is the entire experience rather than something you mask with milk. It is also the thing buyers complain about most, by name.
Third-party testing
Certification is per programme and often per flavour or per batch, so a badge on one product does not carry across a brand’s whole range.
No third-party batch testing is claimed on the product page.
Made by
Sports Supplements Limited, trading as Bulk, Colchester, Essex
Taste and what buyers report
Quoted and linked, so you can read the full thread.
“I always use bulk for my protein powder needs. Their clear whey isolates are my particular favourite. Very good, very clear and come in a range of different flavours.”
“The taste is extremely synthetic.”
“Ordered lemon ice tea clear protein. It tastes of mouldy milk and strawberry.”
“Lemon tea clear protein bad test but drinkable at least.”
What the maker does not publish
- Bulk does not explain anywhere on the product page why a powder built on whey hydrolysate is sold as Clear Whey Isolate.
- Buyer complaints cluster on specific flavours rather than the product as a whole, but Bulk publishes no per-flavour rating, so there is no way to tell from the listing which lines are the safe ones.
Questions buyers ask
The things people search for about Bulk Clear Whey Isolate, answered from the label and the live partner prices rather than from the brand’s own copy.
Is Bulk Clear Whey Isolate actually an isolate?
The ingredient list starts with whey protein hydrolysate, not whey protein isolate. Hydrolysate is whey that has been broken down further, which is what lets it dissolve clear rather than milky. It is a good protein source at 80g per 100g, but the name does not match the label.
How much protein is in a serving of Bulk Clear Whey Isolate?
20g in a 25g serving. That is a smaller scoop than the 30g most powders use, so if you are used to a 25g shake you will want a scoop and a bit, or to count it as 20g and adjust the rest of your day.
Is clear whey better than normal whey after training?
Not nutritionally. It is the same job done in a form that is easier to get down when you are hot and do not want anything creamy. Per 100g it carries less fat, less sugar and far less salt than Bulk Pure Whey Protein, but it also costs more per 25g of protein, so it is a preference purchase rather than an upgrade.
Which flavours should I avoid?
We are not going to score flavours we have not tasted, but the criticism in public reviews is specific and repeated: the lemon iced tea and cola lines take the most direct hits. Buy the 500g bag on any flavour you have not tried.
Reviewed next to
MyProtein
Clear Whey Protein
The same job from MyProtein, at a different price point.
96p / 25g protein
Bulk
Pure Whey Isolate
Bulk's other option, on a different protein base.
£1.05 / 25g protein
Protein Works
Clear Diet Whey Protein - GOLD Innovation
The same job from Protein Works, at a different price point.
£1.37 / 25g protein
Not sure this is the one?
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Last updated 8 September 2026