Refills for L-Glutathione Pen
The at-home, self-injectable glutathione kit for brighter, more even skin and whole-body detox. Your master antioxidant, replenished on your own schedule.
Pharmaceutical-grade glutathione · Certified labs · Discreet, tracked UK dispatch
Description
L-Glutathione is one of the body's most important antioxidants, naturally present in every cell and essential for detoxification, immune defence, cellular protection and healthy ageing. As we age, glutathione levels naturally decline whilst factors including stress, environmental toxins, poor diet, alcohol consumption and oxidative stress can further deplete reserves. Subcutaneous administration bypasses the digestive system entirely, allowing superior absorption compared to traditional oral supplementation and supporting rapid cellular uptake throughout the body.
Each refill kit contains two pre-filled pharmaceutical-grade L-Glutathione cartridges (500mg each), delivering a complete 1000mg supply cycle in a convenient format engineered specifically for the L-Glutathione AT HOME auto-injector pen. Available in 1, 2 and 3 month supply options with progressive savings on longer commitments.
Note: The auto-injector pen and travel case are not included. This refill kit is intended for existing pen holders only.
What's Included
- 2 x L-Glutathione Cartridges (500mg / 3ml each, 1000mg total)
- 20 x Sterile Micro-Needles
- 20 x Antibacterial Wipes
- 1 x Sharps Bin
- 1 x Step-by-Step Instruction Guide
How to use
- Insert the NAD+ cartridge into your auto-injector pen following the included instruction guide.
- Days 1–3: Administer one 50mg dose (0.3ml) daily via subcutaneous injection.
- After day 3: Continue on alternate days or 2–3 times weekly for maintenance.
- Clean the injection site with an antibacterial wipe and rotate sites to minimise sensitivity.
- Dispose of used needles in the included sharps bin. Refrigerate cartridges between 2–8°C.
Ingredients (INCI)
L-Glutathione 1000mg per refill kit (500mg per cartridge). Other Ingredients: Sterile Water for Injection, Sodium Chloride and pharmaceutical-grade stabilising agents. Manufacturing: Sterile-filled under ISO-certified pharmaceutical manufacturing standards. Every batch undergoes independent testing for purity, sterility and potency. Shelf life: 12 months unopened.
The benefits of NAD+
Glutathione is the body's master antioxidant, made in every cell. Levels fall with age, stress and sun, so replenishing it supports how your skin looks and how you feel.
Brighter, even skin
Helps soften dullness and even skin tone by targeting excess melanin production.
Whole-body detox
Binds to toxins and supports the liver's natural detoxification pathways.
Master antioxidant
The body's most powerful antioxidant, defending cells against oxidative stress.
Immune support
Supports immune resilience and healthy, energised cellular function.
Keep your antioxidant and detoxification routine uninterrupted with the L-Glutathione AT HOME Pen Refill Kit.
Available in 1, 2 and 3 month supply options with progressive savings on longer commitments.
Note: The auto-injector pen and travel case are not included.
A few quiet minutes, on your schedule
No clinic, no appointments. Each kit comes with everything you need for a hygienic at-home routine, plus a step-by-step guide. Refrigerate on arrival, rotate sites, and let your skin and body do the rest.
The science of NAD+
Glutathione is a tripeptide made from three amino acids and is the body's master antioxidant, found in every living cell. Levels fall with age, stress, sun exposure and modern life, which can show up as dullness, uneven tone and low energy.
Replenishing glutathione supports brighter, clearer skin, natural detoxification and immune defence. Delivered subcutaneously, it bypasses the digestive system for high bioavailability, so your cells can put it to work quickly.
Glutathione neutralises free radicals and recycles other antioxidants such as vitamins C and E. It also helps regulate tyrosinase, the enzyme behind melanin production, which is why it is prized for a brighter, more even complexion.
High bioavailability, visible results
Oral glutathione is largely broken down in digestion. Delivered subcutaneously, it reaches your system directly, so more of the active goes to work on brightness, detox and antioxidant defence.
How to use
- Insert the NAD+ cartridge into your auto-injector pen following the included instruction guide.
- Days 1–3: Administer one 50mg dose (0.3ml) daily via subcutaneous injection.
- After day 3: Continue on alternate days or 2–3 times weekly for maintenance.
- Clean the injection site with an antibacterial wipe and rotate sites to minimise sensitivity.
- Dispose of used needles in the included sharps bin. Refrigerate cartridges between 2–8°C.
How to inject, step by step
A calm, straightforward walkthrough so your first time feels easy. Watch whenever you need it.
Always follow the printed guide included in your kit.
My skin looks brighter and more even, and I feel less sluggish. It has quietly become one of my non-negotiables.
Expert-selected by The Skin Bay to work alongside NAD+ - both formulated to complement each other for enhanced results.
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Your questions answered
What does glutathione do?
Glutathione is the body's master antioxidant. It supports brighter, more even skin, natural detoxification and immune defence by neutralising free radicals and helping regulate melanin production.
How soon will I see results?
Many people notice a brighter, fresher complexion and more energy within a few weeks. Glutathione works best taken consistently across the full protocol.
How often should I use it?
Follow the protocol in your kit, typically a small subcutaneous dose two to three times a week. Each vial provides multiple doses.
Why injection instead of a capsule?
Oral glutathione is largely broken down in digestion. Subcutaneous delivery bypasses the gut for much higher bioavailability, so more of the active reaches your cells.
Will the injection hurt?
It can sting slightly and small bruises are not unusual. Take the vial out of the fridge about 30 minutes beforehand, insert at a 45 degree angle just under the skin, and rotate sites each time.
Where is best to inject?
Subcutaneously, just under the skin into fatty tissue. The stomach, hips or buttocks work well. Rotate the site with each dose.
Who is glutathione not suitable for?
Not suitable for anyone under 18, or with an allergy to glutathione or sterile solutions. Please speak to your doctor first if you are pregnant or breastfeeding, or have a serious health condition.
Are there any side effects?
Most people notice none. Occasionally there can be mild sensitivity at the injection site. If that happens, choose a different site next time, and stop if anything feels unusual.
How should I store it?
Refrigerate the vial for optimal freshness. It also stays stable at room temperature for a short period, so a day in transit is no problem.
How is it delivered?
Discreetly and tracked across the UK, packed with a cool pack to keep it in perfect condition. A Certificate of Analysis is available on request.