By Rebuilt Performance Team · May 7, 2026 · 7 min read
Most greens powders hide their ingredients behind opaque "Proprietary Blends". Pure Greens™ takes a radically different approach: 100% transparent quantities plus published lab reports. This article explains why this dual transparency makes all the difference.
The Problem with Proprietary Blends in the Supplement Industry
If you look at most greens powders on the market, you'll often find formulations like "Proprietary greens Blend – 3,500 mg" on the label. Below this, ten or more ingredients are listed, but without precise quantities. While this may seem harmless at first, this practice conceals a fundamental problem: you don't know what you're really getting.
A proprietary blend could theoretically consist of 90% of the cheapest ingredient – such as wheatgrass powder – while more expensive, effective ingredients are present only in symbolic amounts. Manufacturers often use this lack of transparency to cut costs, while still being able to advertise an impressive list of ingredients.
This practice is legal, but it contradicts the basic idea of an informed purchasing decision. As a consumer, you have the right to know what you're paying for – especially for products you consume daily.
Pure Greens™: Full Transparency for Every Single Ingredient
Pure Greens™ completely foregoes proprietary blends. Every single ingredient is listed with its exact amount per serving. This means:
- Spinach extract – precisely dosed for optimal nutrient density
- Broccoli extract – fully traceable in quantity
- Wheatgrass – no hidden fillers
- Barley grass – transparently declared
- Purple cabbage leaves – exact quantity specified
- Spirulina – in an effective dosage that helps spirulina feel more energetic and supports the body's vitality
- Vitamin C – 80 mg per serving, which helps reduce tiredness and fatigue and contributes to the normal function of the immune system
- Zinc – in a defined amount, which contributes to the normal function of the immune system
- Chicory root – which supports digestion
- Turmeric – which helps support normal liver function
- Ginger – which helps support digestion
This full disclosure not only enables you to make an informed purchasing decision, but also allows you to integrate Pure Greens™ meaningfully into your overall diet. You can precisely track which nutrients you receive from the product and how they harmonize with your other nutrition.
The Second Level of Transparency: Published Lab Tests
While the complete ingredient list already offers more transparency than most competitor products, Pure Greens™ goes one crucial step further: all batches are tested by the independent laboratory Dr. Graner & Partner GmbH – and the results are published.
What exactly is tested?
The testing program is comprehensive and covers all relevant contaminants that can be found in plant-based products:
- 22 different pesticides – as many greens ingredients come from agricultural cultivation, pesticide testing is essential
- 7 types of bacteria – including potentially problematic germs such as E. coli and salmonella
- 4 heavy metals – lead, cadmium, mercury, and arsenic, which can accumulate in plants
- Moulds – particularly relevant for dried plant powders
- Fungal contamination – additional quality control for microbiological purity
These tests are not legally required. Many manufacturers do not carry them out because they incur additional costs and take time. Pure Greens™ does them anyway – and publishes the results, because transparency means more than just meeting the minimum.
Why Independent Lab Tests Are Important
An internal test in one's own laboratory sounds good initially, but it does not offer the same credibility as testing by an independent, accredited institution. Dr. Graner & Partner GmbH is an established laboratory with no commercial connection to Rebuilt Performance – the results are objective and unbiased.
This external validation gives you the assurance that the product actually delivers what it promises. Over 3 million servings served and an average rating of 4.82 out of 5 stars from 553 Trustpilot reviews confirm that this quality control pays off.
Why Other Manufacturers Don't Publish Lab Tests
The question naturally arises: If lab tests are so important, why don't other manufacturers publish their results? The answer is often uncomfortable:
Cost and effort: Comprehensive lab tests cost several hundred to thousands of euros per batch. With frequent production, this adds up considerably. Many manufacturers save on this investment.
Risk of negative results: Those who publish their tests run the risk that limits may occasionally be exceeded or contaminants found. This can lead to recalls and damage to reputation. Those who do not test or do not publish tests avoid this risk.
Lack of obligation: Legal requirements are often minimal. Many manufacturers see no reason to voluntarily do more than required.
Pure Greens™ consciously accepts these challenges because long-term trust is more important than short-term cost savings. This philosophy is reflected in every product decision.
The Practical Benefits for You as a Consumer
What does this dual transparency mean for you in everyday life?
1. Informed Dosing
Since you know exactly what amounts of Vitamin C, Zinc, and other nutrients are contained in Pure Greens™, you can better control your total intake. This prevents both under- and overdosing when combining with other dietary supplements.
2. Safety and Purity
The published lab tests give you the assurance that your greens powder is free from harmful contaminants. This is particularly important for a product you consume daily.
3. Price-Performance Transparency
When you know exactly what is in a product, you can objectively evaluate the price. Pure Greens™ may appear more expensive at first glance than products with proprietary blends – but you are paying for genuine, demonstrable quality instead of undefined "blends".
4. Trust in the Brand
Companies that have nothing to hide, hide nothing. This openness creates a basis of trust that is particularly valuable in health products.
Frequently Asked Questions about Pure Greens™ Transparency
Where can I view the lab tests?
All current lab reports from Dr. Graner & Partner GmbH are available on the Pure Greens™ product page. There you will find the complete test results for pesticides, heavy metals, bacteria, and microbiological contaminants. The reports are updated for each new product batch.
Are all ingredient quantities really specified?
Yes, without exception. Pure Greens™ contains no proprietary blends or hidden mixtures. Every single ingredient is listed with its exact quantity per serving on the label and in the product description. This complete transparency distinguishes Pure Greens™ from most other greens products on the market.
Why is transparency so important for greens powders?
Greens powders often contain ten or more different plant-based ingredients. Without precise quantity specifications, you cannot assess whether the dosage of individual ingredients is effective at all. In addition, plant-based raw materials can contain pesticides, heavy metals, or other contaminants – lab tests are the only way to rule these out.
How often are new batches tested?
Every single production batch of Pure Greens™ undergoes a complete laboratory analysis at Dr. Graner & Partner GmbH before it is released. This means that regardless of when you buy your tub, you receive a tested product. The test results are continuously updated and published.
Are the lab tests legally required?
No, the comprehensive tests that Pure Greens™ conducts go far beyond the minimum legal requirements. This voluntary commitment to independent quality control is a conscious decision for maximum product safety and consumer protection.
The contents of this page are for informational purposes only and do not replace professional medical advice, diagnosis, or treatment. Always consult your doctor or qualified medical professional for questions about illnesses or health complaints.
Pure Greens is a dietary supplement. Dietary supplements are not a substitute for a balanced and varied diet and a healthy lifestyle. The stated recommended daily intake (1 scoop = 11 g) must not be exceeded. Keep out of reach of children under 3 years. Pregnant women, nursing mothers, and individuals with known medical conditions should consult their doctor before consumption. Store in a cool, dry place.
The health-related claims used are approved by the EU/EFSA and refer to specific ingredients of the product: Vitamin A and Vitamin C contribute to the normal function of the immune system, zinc contributes to normal cognitive function, and inulin from chicory supports digestion. Allergens: contains wheat, barley (celiac disease), and naturally occurring sulfites from spirulina.
An Ingredient List That Hides Nothing
You've just seen what an honest ingredient list looks like. That's exactly what Pure Greens stands for: 13 openly declared ingredients with Vitamin C, A, and Zinc, which contribute to normal immune function.
13 Pure Ingredients.
Fully Declared. One Scoop.
Every ingredient openly listed – with Vitamin C, Vitamin A, and Zinc, which contribute to the normal function of the immune system. No Proprietary Blends. No grassy taste. No subscription.
- ✓ Vitamin C, A & Zinc contribute to normal immune function
- ✓ Zinc contributes to normal cognitive function
- ✓ 13 fully declared ingredients · no artificial flavors
Declared
Ingredients
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Tastes mild – no grassy taste.
I always hated greens powder because of the taste. This one is mild and pleasant. My wife drinks it now too.
Finally one I enjoy drinking.
I had tried several greens – all tasted like lawn. This one is mild and fruity, I really enjoy drinking it.
Tastes really good.
All vegetables in one glass – and it tastes really good too. Very satisfied.
Greens and Reds – both delicious.
I've tried both, both are tasty and easy to drink. Reds in the morning, Greens in the evening.
Great product and personal service.
Tastes good and fits well into everyday life. Plus, truly personal service.
Fantastic taste, easy to mix.
Only positive experiences with the powder – great taste and it mixes effortlessly.
Very satisfied.
The taste is really good. I'm generally a big fan of good nutritional supplements.
Fast delivery and great taste.
Fast delivery and really good taste. I've only been using it for a few days.
A delicious product.
Good taste, fast delivery, and good feedback. Overall a good experience.
Delivered quickly.
Delivered quickly, so we could start right away. Tastes good and is already a good habit.
Good product.
So far, the product fully meets expectations. Good taste, easy to mix.
Pure Greens tastes really good.
Pure Greens tastes really good and is super easy to incorporate into the morning routine.
Delicious.
Super delicious and really good taste – both Greens and Reds.
Fast delivery.
Fast delivery. Tastes good, and there's a good guide included.
Fast delivery, tastes good.
Super fast delivery and the product tastes really good.
Looking forward to it every morning.
I've been taking Pure Greens and Pure Reds for a week and I look forward to it every morning. Tastes good.
Nice raspberry flavor.
Pure Reds has become part of my morning routine – with its lovely raspberry flavor, it's a fresh start.
Fine taste, good delivery.
Fine taste, fast service. I've only been using it for a short time, but so far it's great.
What our customers say
Fast delivery and really good taste
Fast delivery and really good taste 👌
Fine taste, fast delivery
Fine taste and fast service - completely satisfied so far.
Tasty and delivered quickly
Fast delivery and a tasty product.
True to taste
You need a moment to get used to the taste, but delivery was quick and easy.
Top customer service
There was a small error in my order, but customer service fixed it super fast.
Consistently good quality
Fast delivery and always the same good quality.
Trustworthy
Trustworthy product and good communication about shipping.
Smooth
Order arrived on time, updates by email – overall a smooth experience.
No subscription required
Nice that I can decide myself when the next delivery comes.
Great experience
Great experience from start to finish.
Excellent
An excellent product – and friendly service too.
Been a customer for a long time
Fantastic products. Been using them for a long time and am still thrilled.
