Explore RELX – Unlock the Next-Generation Vaping Experience

About RELX E-Cigarettes
RELX was founded with a clear core mission: to provide adult smokers worldwide with a superior, purer alternative through cutting-edge technology and innovative design. As a global leading vape brand, RELX not only pursues perfection in product craftsmanship, but is also committed to advancing standardization and safety across the vaping industry.
At bybyjapan.com, we understand Japanese consumers’ strict standards for quality. That is why we bring RELX’s premium devices and diverse flavors to Japan, ensuring you can enjoy a world-class vaping experience right here.

Core Technologies of RELX
SuperSmooth™ & Leak-Resistant Maze
The reason RELX has earned the trust of millions of users worldwide lies in its continuous breakthroughs in foundational core technology. The most iconic example is the SuperSmooth™ performance standard. To achieve this, the RELX R&D team conducted hundreds of formula and airflow adjustments to ensure every puff delivers the ideal vapor temperature, density, and ultimate smoothness.
Additionally, leakage has long been a major pain point for users. RELX’s proprietary Leak-Resistant Maze technology features a complex 11-layer internal structure designed to securely trap every drop of e-liquid and condensation. Whether carried in your pocket during daily commutes or exposed to air pressure changes while traveling, RELX provides you with total peace of mind.

Award-Winning Minimalist Design
While pursuing ultimate performance, RELX places equal emphasis on aesthetics and ergonomic design. Its flagship devices have won the globally renowned German Red Dot Design Award. From the premium metallic finish of the Infinity series to the classic textured feel of the Essential series, each showcases minimalist yet sophisticated visual appeal. The precisely contoured mouthpiece fits lips naturally for unmatched comfort.
Rigorous Quality & Safety Standards
Safety has always been RELX’s bottom line. Every production batch undergoes rigorous quality inspection before leaving the factory. RELX operates independent physical and chemical laboratories adhering to international standards to conduct in-depth ingredient analysis and ensure zero illicit additives. From pharmaceutical-grade manufacturing environments to strict raw material screening, RELX honors its commitment to quality for every user.
What Is Actually Inside a RELX E-Cigarette?
Broken down, a standard vaping kit mainly consists of a device (battery and chipset) and a pod (e-liquid and atomizer coil). The inhaled vapor is simply an aerosol produced when the e-liquid inside the pod is heated.
The core ingredients of e-liquid are straightforward, primarily consisting of the following:

Propylene Glycol (PG) & Glycerol / Vegetable Glycerin (VG)
What it is: This serves as the e-liquid base (accounting for over 90%), used to generate vapor.
Safety profile: Both are approved food additives and pharmaceutical excipients commonly found in everyday toothpaste, cosmetics, and food products. While ingestion is considered safe, the long-term health safety boundaries of inhaling them into the lungs after heating remain under ongoing medical research.

Nicotine
What it is: The primary active component that satisfies cravings and creates dependency (typically available in varying concentration levels).
Precautions: It is an addictive substance. When used as a harm-reduction alternative to traditional cigarettes, it satisfies the body’s nicotine demand; however, non-smokers and beginners should strictly avoid it, as it carries a high risk of nicotine addiction.

Flavorings
What it is: The flavoring agents that give pods distinct flavor profiles, such as fruity and menthol notes.
Safety profile: Flavorings used in compliant, genuine products are typically food-grade; however, the long-term physiological impact of inhaling them into the respiratory tract after high-temperature vaporization remains a central focus of medical debate and ongoing clinical studies.
First Time Trying RELX? 10 Essential Safety & Beginner Q&As
Understand Your Vape: Ingredients Explained, Doubts Cleared, and Smart Tips
How Many Packs of Cigarettes Does One Pod Actually Equal?
This depends on the nicotine concentration you purchase and how deeply you inhale. Generally, a 2ml pod (typically containing 3% or 5% nicotine) holds roughly the same total amount of nicotine as 2 to 3 packs of traditional cigarettes. Since nicotine absorption efficiency differs between vaping and combustible cigarettes, this figure is for reference only. Be cautious: because vaping is so convenient, many users end up puffing far more throughout the day than they did with regular cigarettes.
Is There Any Harm from "Secondhand" Vape Aerosol?
What you exhale from an e-cigarette is an aerosol, not smoke from combustion. The good news is that it contains neither the deadly tar nor carbon monoxide found in traditional secondhand smoke; the downside is that the vapor still contains trace amounts of nicotine, flavoring residues, and fine particulates. Out of respect for others’ health, it is still advised to avoid vaping around pregnant women, children, or in enclosed public areas
I Tasted a Sweet Liquid While Inhaling (Leaking). Could This Cause Poisoning?
This is a common issue for beginners—either inhaling condensation or experiencing slight leakage. Direct contact with a small amount of e-liquid in the mouth will not cause acute poisoning, though it may mildly irritate the oral mucosa, causing a tingling or peppery sensation. If this happens, simply wipe your lips with a tissue, remove the pod, and flick it downward a few times to shake out the accumulated condensation.
Does Vaping Cause "Popcorn Lung"?
In the early days, certain low-grade e-liquids with butter or creamy flavorings contained a chemical called diacetyl, which can indeed cause bronchiolitis obliterans (commonly known as “popcorn lung”) with heavy, prolonged inhalation. Today, compliant, major brands like RELX strictly ban this substance from their manufacturing standards. This is precisely why it is strongly advised to never purchase counterfeit or cheap third-party compatible pods.
Why Do I Suddenly Get a Burnt Taste While Vaping?
This typically occurs when the e-liquid runs low or when you chain-vape rapidly, causing the internal atomizer coil to fire dry before it can absorb enough e-liquid. A distinct burnt taste indicates the wick cotton inside has been scorched. Stop inhaling immediately—dry hits can release harmful aldehydes—and replace it with a fresh pod.
Why Does My Mouth Feel Dry After Vaping?
This is completely normal. The primary base ingredients of e-liquid—propylene glycol (PG) and vegetable glycerin (VG)—are naturally hygroscopic, meaning they absorb moisture. As vapor passes through your mouth and throat, it draws moisture away from the mucous membranes. The remedy is simple: drink plenty of water to stay hydrated while vaping.
Why Is RELX So Smooth on the Throat? What Special Ingredients Are Used?
The nicotine in conventional cigarettes is in “freebase” form, which produces a harsh, stinging sensation. In contrast, modern mainstream e-cigarettes utilize nicotine salts, which feature a pH level closer to the human body and deliver a far smoother throat hit. That is also its biggest hidden trap: because it doesn’t cause harsh coughing, beginners can easily intake excessive amounts of nicotine unnoticed, resulting in dizziness (commonly referred to as nicotine sickness or a “nicotine rush”).
The E-Liquid Has Darkened Over Time—Is It Still Safe to Vape?
When nicotine in e-liquid is exposed to air and light, normal oxidation occurs, causing the liquid to turn from clear to yellow or darker. If it is only slightly yellowed and the flavor remains unchanged, it is generally safe to continue using. However, if the color turns extremely dark (like soy sauce) and has a noticeable foul or degraded taste, please discard it directly.
Can I Vape While the Device Is Charging? Will It Explode?
Authentic devices from reputable brands feature built-in power management chips and overload protection, making explosions extremely rare under normal use. However, to preserve battery health and ensure absolute safety, pass-through vaping (vaping while charging) is strongly discouraged. Additionally, it is best to charge your device using a standard 5V/1A slow charger (such as an older Apple charging adapter) or a computer USB port, avoiding high-wattage fast chargers to prevent damage to the battery management chip.
Can you truly quit smoking completely using e-cigarettes?
The medical and public health communities generally view compliant e-cigarettes as a “Harm Reduction Tool” rather than a miraculous smoking cessation cure. While they help eliminate the deadliest combustible tar, you remain dependent on nicotine. To truly quit smoking, you should consciously and gradually step down the nicotine strength of your pods (e.g., from 5% down to 3%), actively limit your daily puffs, and eventually phase out all vaping devices entirely.
RELX Maintenance Guide: How to Keep It in Peak Condition
RELX Maintenance Guide: How to Keep It in Peak Condition

Charging Guidelines
Always use the original Type-C cable connected to a standard 5V/1A power adapter. Do not use phone fast chargers, as excessive current can damage the internal battery. Once fully charged (the LED indicator will stay solid or turn off, depending on the model), unplug it promptly.
Cleaning Condensation
During normal use, temperature variations may occasionally produce minor droplets (condensation) inside the device cavity, which is not e-liquid leakage. It is recommended to gently wipe the internal metal contact pins with a cotton swab once a week to keep them dry.


Pod Storage
Unopened pods should be stored in a cool, dry place away from direct sunlight. For pods currently in use, it is recommended to remove them from the device during long-distance flights or environments with significant atmospheric pressure changes to prevent leakage caused by air pressure variations.
What Should I Do If the LED Indicator Flashes Abnormally?
If the indicator flashes red while vaping, it typically indicates a low battery. If a single puff lasts too long (exceeding 5 seconds), the device triggers over-puff protection and the indicator will flash; please wait briefly before taking another puff.

Company Profile
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