The Harshness

Freebase Nicotine has a higher pH level which in turn affects the alkalinity. It causes a harsher throat-hit. Nicotine salt has lower alkalinity due to the acid which gives you smoother vaping experience.

The nicotine absorption rate into the blood

Nicotine Salt e-liquid has a faster absorption rate.The pH level is more suitable for absorption.

LIQUA 4S offers you the same nicotine delivery as cigarettes in combination with 4S devices and 4S e-liquid.

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