By Rebuilt Performance Team · May 7, 2026 · 7 minutes reading time
Most greens powders obscure 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 double transparency makes the difference.
The problem with proprietary blends in the supplement industry
If you look at most greens powders on the market, you often find formulations like “Proprietary greens blend – 3,500 mg” on the label. Below that, ten or more ingredients are listed but without exact quantities. This may sound harmless at first, but this practice hides 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 only present in symbolic amounts. Manufacturers often use this lack of transparency to reduce costs while still advertising an impressive ingredient list.
This practice is legal, but it contradicts the principle of an informed purchase decision. As a consumer, you have the right to know what you are paying for—especially with products you consume daily.
Pure Greens™: Full transparency for every single ingredient
Pure Greens™ completely avoids proprietary blends. Each individual ingredient is listed with its exact amount per serving. This means specifically:
- Spinach extract – precisely dosed for optimal nutrient density
- Broccoli extract – fully traceable in quantity
- Wheatgrass – no hidden filler amounts
- Barley grass – transparently declared
- Purple cabbage leaves – exact quantity specified
- Spirulina – in an effective dosage, Spirulina helps you feel more energetic and supports the body's vitality
- Vitamin C – 80 mg per serving, which helps reduce tiredness and fatigue and supports normal immune system function
- Zinc – in a defined amount, contributes to the normal function of the immune system
- Chicory root – supports digestion
- Turmeric – helps support normal liver function
- Ginger – helps support digestion
This full disclosure not only allows you to make an informed purchase decision but also gives you the opportunity to meaningfully integrate Pure Greens™ into your overall diet. You can precisely track which nutrients you receive from the product and how they harmonize with your other dietary intake.
The second level of transparency: Published lab tests
While the complete ingredient list already offers more transparency than most competing products, Pure Greens™ goes one crucial step further: All batches are tested in the independent lab 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 occur in plant-based products:
- 22 different pesticides – since many greens ingredients come from agricultural cultivation, pesticide testing is essential
- 7 types of bacteria – including potentially problematic germs like E. coli and Salmonella
- 4 heavy metals – lead, cadmium, mercury, and arsenic, which can accumulate in plants
- Molds – especially relevant for dried plant powders
- Fungal infestation – additional quality control for microbiological purity
These tests are not legally required. Many manufacturers do not conduct them because they cause 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 your own lab sounds good at first, but it does not offer the same credibility as a test by an independent, accredited institution. Dr. Graner & Partner GmbH is an established lab with no commercial connection to Rebuilt Performance – the results are objective and unbiased.
This external validation gives you the confidence that the product actually delivers what it promises. Over 3 million served portions 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 do not publish lab tests
The question arises: If lab tests are so important, why don’t other manufacturers publish their results? The answer is often uncomfortable:
Costs and effort: Comprehensive lab tests cost several hundred to a thousand euros per batch. With frequent production, this adds up significantly. Many manufacturers save this investment.
Risk of negative results: Those who publish their tests take the risk that occasionally limits are exceeded or contaminants are 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 double transparency mean for you in everyday life?
1. Informed dosing
Since you know exactly how much vitamin C, zinc, and other nutrients are in Pure Greens™, you can better control your total intake. This prevents both under- and overdosing when combined with other supplements.
2. Safety and purity
The published lab tests give you the assurance that your greens powder is free from harmful contaminants. This is especially 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 seem more expensive at first glance than products with proprietary blends – but you pay for real, verifiable quality instead of undefined “blends.”
4. Trust in the brand
Companies that have nothing to hide, hide nothing. This openness creates a foundation of trust that is especially valuable for 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 full test results for pesticides, heavy metals, bacteria, and microbiological contaminants. The reports are updated for every new product batch.
Are all ingredient amounts really specified?
Yes, without exception. Pure Greens™ contains no proprietary blends or hidden mixtures. Every single ingredient is listed with its exact amount per serving on the label and in the product description. This complete transparency sets Pure Greens™ apart 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 information, you cannot assess whether the dosage of each ingredient is effective at all. Additionally, plant 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 full laboratory analysis at Dr. Graner & Partner GmbH before release. This means that no matter when you buy your can, you receive a tested product. Test results are continuously updated and published.
Are lab tests legally required?
No, the extensive tests Pure Greens™ conducts go far beyond the legal minimum requirements. This voluntary commitment to independent quality control is a conscious decision for maximum product safety and consumer protection.
The content of this page is for informational purposes only and does not replace professional medical advice, diagnosis, or treatment. Always consult your doctor or qualified medical personnel if you have questions about illnesses or health concerns.
Pure Greens is a dietary supplement. Dietary supplements are not a substitute for a balanced and varied diet and a healthy lifestyle. The recommended daily intake (1 scoop = 11 g) should not be exceeded. Keep out of reach of children under 3 years. Pregnant or breastfeeding women and people with known medical conditions should consult their doctor before use. Store in a cool, dry place.
The health claims used are approved by the EU/EFSA and refer to specific ingredients in the product: Vitamin A and Vitamin C contribute to normal immune system function, 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 just saw 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 that contribute to normal immune function.
13 pure ingredients.
Fully declared. One scoop.
Every ingredient openly listed – with Vitamin C, Vitamin A, and Zinc that 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 flavor.
I always hated Greens powder because of the taste. This one is mild and pleasant. My wife now drinks it too.
Finally one I like to drink.
I had tried several Greens – all tasted like grass. 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 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 a really personal service.
Fantastic taste, easy to stir.
Only positive experiences with the powder – great taste and mixes effortlessly.
Very satisfied.
The taste is really good. I'm generally a big fan of good 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.
Quick delivery.
Quickly delivered so we could get started right away. Tastes good and has already become 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 fits perfectly into the morning.
Tasty.
Super tasty and really good flavor – both Greens and Reds.
Fast delivery.
Fast delivery. Tastes good, and there’s a good instruction included.
Fast delivery, tastes good.
Super fast delivery and the product tastes really good.
Look forward to it every morning.
I’ve been taking Pure Greens and Pure Reds for a week and look forward to it every morning. Tastes good.
Lovely raspberry flavor.
Pure Reds has become part of my morning routine – with its lovely raspberry flavor, a fresh start.
Nice taste, good delivery.
Nice taste, fast service. I’ve only been using it a short time, but so far top.
Testimonials in videos or other promotional material may include people who have received compensation, free products, or other incentives.
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 – so far completely satisfied.
Tasty and quickly delivered
Fast delivery and a tasty product.
Honest about the taste
You have to get used to the taste briefly, but delivery was fast and hassle-free.
Top customer service
There was a small error in my order, but customer service fixed it super quickly.
Consistently good quality
Fast delivery and always the same good quality.
Trustworthy
Trustworthy product and good communication regarding shipping.
Smooth
Order arrived on time, updates via email – a smooth experience all around.
No subscription obligation
Nice to be able to decide when the next delivery arrives.
Great experience
Great experience from start to finish.
Excellent
An excellent product – and friendly service as well.
Long-time user
Fantastic products. Have been using them for a long time and am still impressed.
