Integrally blown thickened flat shoulder short glass bottle, smooth matte translucent finish for all color variants. Lightproof tinted glass effectively slows essence oxidation. Matching rubber dropper with glass pipette precisely controls liquid dosage; screw neck fits tightly to prevent leakage during transit. Blank glass bottles support custom silk-screen logo printing, widely used for facial serums, plant essential oils, facial care ampoules and private label cosmetic packaging.