The quality of light-sensitive materials — essential oils, perfume bases, retinol serums, vitamin C formulations — depends significantly on how they are stored. This pack of 192 10 ml black glass bottles is intended for those who seek the strictest possible light protection for their preparations: fully opaque black glass blocks essentially the entire spectrum of visible light and UV radiation.
What is in this pack of 192
192 pieces of 10 ml black glass dropper bottles with 192 matching black plastic screw caps. Bottle height: approx. 57 mm, diameter: approx. 24 mm, empty weight: approx. 30 g each. Total gross pack weight: ~6.34 kg. Country of origin: China.
Black glass and full light blocking
Black glass is opaque — it blocks essentially the entire spectrum of visible light and UV radiation from reaching the contents. This is the highest level of light protection available, considerably stricter than amber glass (which filters UV and the blue-green wavelengths but lets some of the red range through) or clear glass (which provides no meaningful light protection). Black glass is recommended particularly for light-sensitive active ingredients: perfume bases (where light degrades fragrance components), retinol serums, vitamin C (ascorbic acid) formulations, sensitive essential oils (bergamot, lemon, lime, pine), and premium cosmetic products where UV stability is a critical factor.
Cap details
The included black plastic screw cap provides a simple, reliable closure for the bottle. The cap's inner liner seals leak-free and offers comfortable everyday handling. It is a lighter and more economical option than aluminium, making it suitable for high-volume bottling or for preparations not sensitive to cap material (water-based hydrosols, diluted blends). For strongly citrus-based essential oils or high-alcohol tinctures, long-term storage with an aluminium or glass dropper cap is generally preferable.
Typical applications
- Long-term storage of photosensitive essential oils (citrus, pine, bergamot)
- Bottling perfume bases, colognes, and scented oil blends
- Retinol, vitamin C, and other oxidation-sensitive active cosmetic serums
- Aromatherapy blends and massage oil formulations
- Own-brand (DIY) cosmetics and premium retail packaging
Labelling and storage
An important consideration: because black glass is opaque, the fill level and contents are not visible from outside. For this reason, accurate, legible labelling is essential when using black glass — it is advisable to record the contents, concentration, blending ratio, and fill date. For the 10 ml size, a clearly visible numbered or coded sticker is practical for quick identification. Cleaning requires only warm water and mild soap; for stubborn scent residues, a rinse with 70% isopropyl alcohol is recommended. Avoid the dishwasher to preserve any external markings. Store filled bottles in a cool, dry place.