Space Goods Rainbow Dust Review 2026: The Best Tasting Mushroom Coffee?

Space Goods Rainbow Dust: A Deep-Dive Review

Space Goods burst onto the mushroom coffee scene in 2022 with a bold proposition: functional mushrooms don't have to taste like dirt. After three weeks of testing all five Rainbow Dust flavors, we're ready to give you the complete breakdown.

This isn't your typical earthy, medicinal mushroom powder. Space Goods has engineered something that tastes like a dessert, packs serious caffeine, and delivers one of the highest Lion's Mane doses on the market. But is the premium price justified? Let's find out.

Quick Overview: What Is Space Goods?

Space Goods is a London-based wellness brand founded in April 2022 by Matthew Kelly. Unlike the earthy, hippie-adjacent aesthetic of most mushroom products, Space Goods positions itself as a "next-gen wellness brand" with futuristic neon packaging designed to appeal to millennials and Gen Z.

Their flagship product, Rainbow Dust, is an all-in-one powder combining functional mushrooms, adaptogens, and coffee extract into what they describe as "cosmic fuel for your brain."

Key Stats:

• ▸Founded: April 2022
• ▸Headquarters: London, UK
• ▸Flagship Product: Rainbow Dust
• ▸Trustpilot Rating: 4.5/5 stars
• ▸Available Flavors: 5 (Chocolate, Vanilla Cinnamon, Coffee, Salted Caramel, Strawberry)

The Founder's Story: Born from Personal Struggle

What sets Space Goods apart from other wellness brands is its origin story. Founder Matthew Kelly didn't create Rainbow Dust to capitalize on a trend—he made it for himself.

After his previous e-commerce business, Neon Beach, collapsed, Kelly struggled with depression and bipolar disorder. Dissatisfied with prescription medications and tired of the anxiety-inducing effects of traditional coffee, he began experimenting with functional mushrooms and adaptogens.

His experience with psychedelics sparked an interest in the potential of mushrooms for mental wellness. Rainbow Dust was born as his personal all-in-one solution—something that could provide stable energy, improved focus, and mood regulation without the crash and jitters of conventional stimulants.

This personal investment in the product shows. The dosages aren't marketing fluff—they're the amounts Kelly found effective for his own needs. The 1000mg of Lion's Mane, for instance, is double what most competitors offer.

Product Specs: What's Inside Rainbow Dust?

Ingredients Deep-Dive: The Formula Breakdown

Rainbow Dust's formula combines three functional mushrooms, multiple adaptogens, and a coffee base. Let's break down what you're actually consuming.

Functional Mushrooms

Lion's Mane (1000mg) — The Star Ingredient

This is where Space Goods really stands out. At 1000mg per serving, Rainbow Dust contains double the Lion's Mane found in most competing products.

Lion's Mane has been extensively studied for its potential cognitive benefits:

• ▸Nerve Growth Factor (NGF): Studies suggest Lion's Mane may stimulate NGF production, supporting brain health and neuroplasticity
• ▸Focus & Memory: Users commonly report improved concentration and recall
• ▸Neuroprotection: Potential protective effects against cognitive decline

At this dosage, you're getting a clinically meaningful amount—not just a dusting for the label.

Cordyceps (500mg)

Known as the "energy mushroom," Cordyceps is favored by athletes for:

• ▸Oxygen utilization: May improve how efficiently your cells use oxygen
• ▸Physical stamina: Traditional use for endurance and vitality
• ▸Natural energy: Supports ATP production at the cellular level

Chaga (500mg)

Chaga is the antioxidant powerhouse of the formula:

• ▸Immune support: Rich in beta-glucans that modulate immune function
• ▸Anti-inflammatory: Contains compounds that may reduce oxidative stress
• ▸Skin health: Some users report improved complexion with regular use

Adaptogens & Nootropics

Beyond mushrooms, Rainbow Dust includes several adaptogens that work synergistically:

Ashwagandha

The stress-buster. Ashwagandha helps regulate cortisol, your body's primary stress hormone. This is why Space Goods users report feeling energized but calm—not wired and anxious.

Rhodiola Rosea

An adaptogen traditionally used to fight fatigue and burnout. Rhodiola helps your body adapt to stress while supporting mental performance under pressure.

Maca Root

Known for hormonal balance and natural energy. Maca adds a subtle lift and may support mood regulation.

Vitamin B5

Essential for energy metabolism. B5 helps your body convert food into fuel and supports adrenal function.

The Base: Coffee Extract

Rainbow Dust uses coffee extract as its caffeine source. The standard formula delivers 80mg per serving (similar to a weak cup of coffee), while the Coffee flavor packs 120mg for those needing a stronger kick.

Sweeteners: The Controversial Part

Rainbow Dust is sweetened with Stevia and Sucralose. This is where opinions diverge sharply. The sweeteners are what make Space Goods taste so good—but sucralose is a dealbreaker for clean-label purists.

We'll address this more in the pros and cons section.

Taste Test: All 5 Flavors Reviewed

Here's the truth: Space Goods tastes nothing like typical mushroom coffee. If you've tried other brands and been turned off by earthy, medicinal flavors, Rainbow Dust will genuinely surprise you.

Chocolate — 9/10

Our team's favorite. This tastes remarkably like rich hot chocolate. The mushroom flavor is completely masked. We detected hints of cocoa, a subtle maltiness, and a smooth finish. With oat milk, it's genuinely dessert-like.

Best for: Hot chocolate lovers, beginners to mushroom coffee

Vanilla Cinnamon — 8.5/10

Cozy and comforting. The vanilla is pronounced but not artificial-tasting, and the cinnamon adds warmth without being overpowering. Excellent for fall and winter mornings.

Best for: Those who enjoy spiced lattes, chai enthusiasts

Coffee — 8/10

The most traditional option. This actually tastes like sweetened coffee with a hint of earthiness that lets you know the mushrooms are there. At 120mg caffeine, it's the strongest option for those who need serious fuel.

Best for: Coffee purists who want more caffeine, those transitioning from regular coffee

Salted Caramel — 8/10

Surprisingly authentic. The salt-sweet balance is well-executed, though some testers found it leaned too sweet. Best with a splash of unsweetened almond milk to cut the sweetness.

Best for: Dessert lovers, those who like sweet coffee drinks

Strawberry — 7/10

The most polarizing flavor. Some loved the fruity twist; others found it too artificial. It works better as a cold shake or smoothie addition than as a hot drink.

Best for: Summer drinks, smoothie mixing, those bored of traditional flavors

Sweetness Level Warning

All flavors are noticeably sweet—much sweeter than competitors like RYZE or MUD/WTR. If you prefer unsweetened coffee, Space Goods might be too much. However, if you regularly add sugar or flavored syrups to coffee, you'll likely love this.

Effects & Benefits: Our 3-Week Experience

We tracked focus, energy, mood, and side effects over 21 days of daily use. Here's what happened.

Week 1: Noticeable Energy

The higher caffeine content (80mg+) means you feel Space Goods immediately. Unlike some mushroom coffees that are so low-caffeine you wonder if they're working, Rainbow Dust delivers a real energy boost within 20-30 minutes.

What we noticed:

• ▸Clean energy without jitters (the adaptogens modulate the caffeine)
• ▸Sustained focus for 3-4 hours
• ▸No afternoon crash when consumed in the morning
• ▸Better mood during stressful work

Week 2: Cognitive Clarity

By week two, the Lion's Mane effects became more apparent. The 1000mg dose is significant enough to produce noticeable cognitive benefits:

• ▸Improved verbal fluency (words came easier)
• ▸Better task-switching without feeling scattered
• ▸Enhanced ability to enter "flow state" during creative work
• ▸More consistent motivation throughout the day

Week 3: Compounding Benefits

The adaptogens and mushrooms really show their value with consistent use:

• ▸Reduced stress reactivity (things that would have frustrated us didn't as much)
• ▸More stable energy levels day-to-day
• ▸Improved sleep quality (despite the caffeine, we felt better rested)
• ▸Reduced sugar cravings (possibly related to stable energy)

Important Caveat: These benefits require daily, consistent use. One serving won't change your life. Give it 2-3 weeks.

Space Goods vs. Competitors

How does Rainbow Dust stack up against the competition? Here's a detailed comparison of the major players.

Space Goods vs. RYZE

Space Goods wins on: Taste, Lion's Mane dosage, caffeine content, flavor variety

RYZE wins on: Price, mushroom variety (6 vs. 3), no artificial sweeteners, organic certification

Verdict: Choose Space Goods if taste is your priority and you want more energy. Choose RYZE if you want better value and cleaner ingredients.

Space Goods vs. Four Sigmatic

Space Goods wins on: Taste, Lion's Mane dosage, adaptogen variety, energy boost

Four Sigmatic wins on: Brand trust (longer track record), retail availability, no artificial sweeteners

Verdict: Space Goods for a better daily drinking experience. Four Sigmatic if you want store availability and cleaner label.

Space Goods vs. MUD/WTR

Space Goods wins on: Taste (if you prefer sweet), caffeine content, Lion's Mane dose

MUD/WTR wins on: Price, no sweeteners, lower caffeine for sensitive individuals, ritualistic experience

Verdict: Two very different products. Space Goods is for energy and taste seekers. MUD/WTR is for those wanting a calm, chai-like ritual with minimal caffeine.

Pros and Cons: The Honest Assessment

Pros

1. Best Taste in the Category There's no sugarcoating it (pun intended)—Space Goods tastes better than any mushroom coffee we've tried. The dessert-like flavors make daily use enjoyable rather than medicinal.

2. Industry-Leading Lion's Mane Dose 1000mg is double the competition. If you're buying mushroom coffee specifically for cognitive benefits, this dosage actually delivers.

3. Real Caffeine, Real Energy At 80-120mg, you'll actually feel this. Unlike some mushroom coffees that feel like drinking warm water, Space Goods provides legitimate energy.

4. Comprehensive Adaptogen Stack Ashwagandha, Rhodiola, and Maca work synergistically with the mushrooms. You're not just getting caffeine—you're getting stress support.

5. Premium Brand Experience The neon packaging looks great on your counter. The starter kit (shaker, spoon, frother) adds value. The brand feels modern and premium.

Cons

1. Sucralose — The Elephant in the Room Let's address this directly. Sucralose is an artificial sweetener that some people avoid for various reasons:

• ▸Potential gut microbiome disruption (some studies suggest this)
• ▸Artificial ingredient in an otherwise "natural" product
• ▸Sweet aftertaste that some find unpleasant

If you're strict about clean ingredients, this is a dealbreaker. Space Goods prioritized taste over label purity—a trade-off you need to decide on personally.

2. Premium Pricing At $69 one-time ($55 subscription), Space Goods costs 50% more than RYZE. The higher Lion's Mane dose partially justifies this, but value-conscious buyers have better options.

3. Sweetness Level Even if you're fine with sucralose, the sweetness level can be overwhelming. If you drink black coffee, this will taste like dessert—which may not be what you want every morning.

4. Subscription Concerns Some reviewers report difficulty canceling subscriptions and unexpected charges. While this isn't universal, it's worth noting. If subscribing, keep records and mark your calendar.

5. Not Organic Unlike some competitors, Space Goods isn't certified organic. For some buyers, this matters.

Who Should Buy Space Goods Rainbow Dust

Rainbow Dust is perfect for:

• ▸Taste-first buyers: If you've tried mushroom coffee and hated the earthy flavor, this is your answer
• ▸Caffeine lovers: The 80-120mg range provides real energy for those who need it
• ▸Cognitive focus seekers: The 1000mg Lion's Mane is hard to beat for brain benefits
• ▸ADHD-aware individuals: Many users report it helps with focus and attention
• ▸Those transitioning from energy drinks: Healthier alternative with similar energy
• ▸Aesthetic-conscious consumers: The packaging looks great and feels premium

Who Should Skip It

Rainbow Dust might not be right for you if:

• ▸Clean-label purists: The sucralose is a dealbreaker for strict clean eaters
• ▸Budget-conscious buyers: RYZE and MUD/WTR offer better value
• ▸Low-caffeine seekers: Even the decaf has some caffeine; MUD/WTR is a better choice
• ▸Unsweetened coffee drinkers: The sweetness level will be overwhelming
• ▸Organic-only shoppers: Space Goods lacks organic certification
• ▸Subscription skeptics: Consider one-time purchases despite the higher price

Subscription Value Analysis: Is the Starter Kit Worth It?

Space Goods heavily promotes their subscription, offering:

• ▸25% off (reduces price from $69 to $55)
• ▸Free Starter Kit worth ~$59, including:
  • ▸Branded shaker bottle
  • ▸Metal measuring spoon
  • ▸Electric frother

The Math:

• ▸One-time: $69
• ▸Subscription first order: $55 + ~$59 starter kit value = $114 value for $55
• ▸Cost per serving: $1.83 (subscription) vs. $2.30 (one-time)

Verdict: The subscription offers genuine value, especially for first-time buyers who'd benefit from the accessories. However, set a calendar reminder to manage or cancel before unwanted renewals.

Subscription Frequency Options: 30, 45, or 60 days—choose based on your usage. One bag lasts 30 days at one serving per day.

How to Prepare Space Goods for Best Results

Basic Preparation:

1. ▸Add one scoop (included) to your mug
2. ▸Pour 8oz of hot water (not boiling—around 175°F is ideal)
3. ▸Whisk or froth until fully dissolved
4. ▸Enjoy hot, or pour over ice

Pro Tips for Better Taste:

As Hot Chocolate (Chocolate Flavor)

• ▸Mix with oat milk instead of water for creamy richness
• ▸Top with a pinch of sea salt to balance sweetness
• ▸Add a dash of cinnamon for warmth

As Iced Coffee (Coffee Flavor)

• ▸Dissolve in 4oz hot water first
• ▸Add ice and cold almond milk
• ▸Shake in the starter kit shaker for frothy consistency

In Smoothies (Strawberry Flavor)

• ▸Blend with frozen banana, strawberries, and Greek yogurt
• ▸The sweetness works well in fruit-forward combinations

Reducing Sweetness

• ▸Use more water or milk to dilute
• ▸Mix with unsweetened cocoa powder (Chocolate flavor)
• ▸Blend into a smoothie where other ingredients balance the sweetness

Frequently Asked Questions

Does Space Goods actually work?

Based on our testing and the dosages involved, yes. The 1000mg Lion's Mane is a clinically meaningful dose, and the 80mg+ caffeine provides real energy. Most users report noticeable effects within the first week, with cognitive benefits compounding over 2-3 weeks.

Is Space Goods safe?

For most healthy adults, yes. The ingredients are well-studied and generally considered safe. However, consult your doctor if you're pregnant, nursing, taking medications (especially for mood disorders), or have mushroom allergies.

Can I take Space Goods with other supplements?

Generally yes, but be mindful of caffeine stacking. If you take other stimulants or caffeinated products, factor in the 80-120mg you're getting from Rainbow Dust.

Why does Space Goods use sucralose?

To achieve the dessert-like taste that differentiates them from competitors. Without sweeteners, mushroom coffee has an earthy, sometimes bitter taste. Space Goods prioritized palatability over clean-label purity.

How long does a bag last?

30 days at one serving per day. Some users use two servings on demanding days, which would last 15 days.

Can I drink Space Goods in the afternoon?

With 80-120mg caffeine, afternoon consumption may affect sleep for caffeine-sensitive individuals. Their decaf version (<10mg) is a better choice for later in the day.

Does Space Goods contain psilocybin or psychedelic compounds?

No. Despite the founder's personal interest in psychedelics inspiring his research, Rainbow Dust contains only legal functional mushrooms with no psychoactive compounds.

Is Space Goods worth the money?

It depends on your priorities. If taste and high Lion's Mane dosage matter most, yes. If you want the best value per serving, RYZE offers more at a lower price.

Final Verdict: Should You Buy Space Goods Rainbow Dust?

Our Rating: 4.5/5 Stars

Space Goods Rainbow Dust is the best-tasting mushroom coffee on the market. Full stop. If you've tried other brands and been disappointed by earthy, medicinal flavors, this will change your mind about the category.

The 1000mg Lion's Mane dose is legitimately impressive—double what most competitors offer. Combined with adaptogens like Ashwagandha and Rhodiola, the formula delivers real cognitive and energy benefits without the jitters and crash of regular coffee.

However, the sucralose is a genuine concern. If you're strict about clean ingredients, this isn't the product for you. The sweetness level also won't appeal to black coffee purists.

Bottom line: Space Goods is the premium choice for taste-focused buyers who want high-dose Lion's Mane and don't mind artificial sweeteners. If that describes you, Rainbow Dust delivers an exceptional daily ritual that you'll actually look forward to.

For budget-conscious buyers or clean-label purists, RYZE or MUD/WTR offer better alternatives. But if taste is your top priority, Space Goods stands alone.

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Ready to try the best-tasting mushroom coffee on the market? Get 25% off your first order plus a free starter kit worth $59 when you subscribe to Space Goods Rainbow Dust.