Glass ampoules are airtight containers, filled with the highest quality of active ingredients, producing a very concentrated form of treatment. They have a white ring on the neck which is the breaking point. Dr. Temt products light gel & oil ampoules. Gel ampoules are easier to absorb by the skin, they can be use with Galvanic Iontophoresis (- to+), ultra sound, high frequency, or massage with a steamer. All gel ampoules can be used together with a suitable mask. Oil ampoules are designed to be massaged in under steam. They cannot be used with Galvanic. The ampoules are formulated with a high concentration of active ingredients. Each ampoule contains specially formulated, highly active natural ingredients, designed to address every skin condition and deficiency. Combining ampoules and masks together in a treatment increases the effects.