Places with higher temperature will be easier for chemical reactions.

As we all known, chemical molecules are more active under the higher temperature generally and easy to produce chemical reactions. If the molecules in e-liquid react chemically and produce new substance, that may change the flavor of it.

Therefore, for vapers, it is recommended that keeping your E-cigarettes away from direct sunshine and heat.

If exposed on sunshine again and again or the temperature around sharply rising, nicotine in e-liquid will turn black and contributes to the flavor’s change.

Besides, purchasing E-cigarette of higher qualities is very vital. e-liquid of higher qualities and e-cigarette conspire to the best experience. While the cheaper one may of low qualities and then the PG and VG in it will be oxidation and go bad more easily.

Observing the condition of e-liquid, if it looks pure and smells almost the same with the taste of that originally purchasing, keep use it. On the contrary, it is suggested throw away the e-liquid that purchased long time ago.

But some vapers will choose to keep them a period of time specially for gaining the better tastes. In this kind of situation, we also recommend to put the e-liquid in the cool places.