What is e-liquid made out of?
Leave a message
E-liquid, also called vape juice, is typically made from a mixture of four key ingredients, though formulations can vary.
Here is a breakdown of the standard components:
| Ingredient | Primary Function | Typical % | Key Notes & Safety Context |
|---|---|---|---|
| Propylene Glycol (PG) | Carrier for flavor & nicotine; provides "throat hit." | 30-50% | FDA "Generally Recognized as Safe" (GRAS) for ingestion. Effects of long-term inhalation are still being studied. |
| Vegetable Glycerin (VG) | Produces visible vapor; adds sweetness. | 50-70% | Also FDA GRAS for food. Thicker than PG; high-VG liquids produce more vapor. |
| Flavorings | Provides taste. | 5-15% | Food-grade concentrates. Safety for inhalation is not guaranteed; some compounds (e.g., diacetyl) are known hazards. |
| Nicotine | Addictive stimulant (optional). | 0mg, 3mg, 6mg, etc. (per mL) | Highly toxic in concentrated form. Many liquids are available with 0mg (nicotine-free). |
🔍 Important Context and Variations
Base Liquid (PG/VG Ratio): The ratio affects throat hit, vapor production, and device compatibility. Common ratios include 50/50, 70/30 (VG/PG), or Max VG.
Ingredient Quality & Additives: The safety profile depends heavily on the purity of ingredients. Research, including a Yale study, has found that e-liquids can contain unlisted substances, such as ethanol. Other potential additives include water, sweeteners (like sucralose), or cooling agents (like menthol).
"Generally Recognized as Safe" (GRAS) Misconception: While PG and VG are FDA-approved for consumption in food, this does not equate to safety for inhalation. The lungs process substances differently than the digestive system.
In summary, while the core formula is simple, the purity of ingredients and the presence of unlisted additives are major factors in the safety of any specific e-liquid. This aligns with previous discussions about risks from ingredients like diacetyl or alcohol.
If you're curious about a specific component, like the types of flavorings used or how nicotine levels are measured, I can provide more detailed information.
