Nicotine Salts vs. Freebase E-Liquids: Which is Best for Quitting Smoking? UK E-Liquid Guide Nicotine Salts vs. Freebase E-Liquids: Which is Best for Quitting Smoking? When adult smokers decide to make the transition away from combustible tobacco, selecting the right e-liquid formulation is often the deciding factor between a successful switch and a relapse. While…