This is a complete cylinder dropper bottle family in green glass, running from a 5ml sample vial all the way up to a 100ml refill format, with intermediate sizes at 10, 15, 20, 30, and 50ml. The bottle shown here illustrates the shared design language: a straight-sided cylindrical body, a gently rounded shoulder, and a standard 18mm DIN neck finish that accepts dropper caps, pipette assemblies, reducers, and tamper-evident closures across every size in the ladder. If you are a skincare, aromatherapy, or wellness brand planning a product line rather than a single SKU, this family was built for you: one visual identity, seven capacities, and one closure system that your contract filler can stock once and use everywhere.
One Mold Family, Seven Capacities
Most brands do not launch with a single bottle size. A typical serum or facial oil line needs a discovery size, a hero retail size, and a back-bar or refill size. Sourcing each capacity from a different mold family creates a shelf presence that looks assembled rather than designed, and it multiplies your packaging SKUs, artwork versions, and closure inventory. A unified cylinder family solves all three problems at once. Your 5ml miniature and your 100ml refill share the same proportions, the same label panel geometry scaled proportionally, and the same green glass tone, so the line reads as one deliberate system on the shelf and in photography. Because every size uses the same 18mm neck, one dropper cap SKU fits the entire range, which meaningfully reduces closure cost and the risk of a filling line stoppage when a single closure size runs short.
The Economics of Line Extension
The financial logic of a size ladder is straightforward. Your 30ml bottle is usually the profit engine, priced for first-time buyers. The 5ml and 10ml sizes are marketing assets: they feed discovery sets, influencer seeding, and gift-with-purchase programs at a controlled cost. The 50ml and 100ml formats capture your loyal customers at a lower cost per milliliter and dramatically reduce their reorder friction, which lifts lifetime value. When all of those sizes come from one supplier and one mold family, your procurement overhead stays flat as the line grows. Reorders become a quantity decision, not a new sourcing project, and mixed-size orders can be consolidated into a single shipment. Our guide on glass bottle MOQ tiers explains how volume across a family can be combined to reach better price breaks.
Matching Sizes to Real Use Cases
From years of supplying this category, a few patterns repeat. The 5ml and 10ml sizes move as samples, travel companions, and essential oil single notes. The 15ml and 20ml formats suit concentrated actives such as retinol or vitamin C boosters where the formula is dosed in drops and oxidizes quickly, so a smaller bottle protects potency after opening. The 30ml is the default facial serum and beard oil retail size. The 50ml serves body oils and hair treatments, and the 100ml works for massage oils, salon back-bar use, and refill-at-home programs. A useful rule: the more frequently the customer dispenses, the larger the size they will tolerate on the shelf. Confirm the exact brimful capacity of each mold on the technical drawing at quotation so your fill claims and label copy stay accurate in every market.
Green Glass, Light Protection, and Formula Compatibility
Green glass filters a meaningful portion of visible light while letting the natural color of the oil or serum show through, which buyers associate with botanical and apothecary positioning. It sits between flint glass, which offers the least light screening, and amber glass, which offers the most. For photosensitive formulas such as citrus essential oils or retinoid serums, discuss your stability data with us and we can advise whether green is sufficient or whether an amber variant of the same family is the safer choice; both are available. The glass itself is chemically inert toward oils, alcohols, and the acidic actives common in skincare, and unlike plastic it will not absorb fragrance compounds or allow gradual oxygen transmission that degrades the formula over shelf life.
Dropper and Closure Options Across the Range
The shared 18mm DIN neck accepts a wide closure toolkit: glass pipette droppers with nitrile or silicone bulbs, calibrated pipettes for dosed actives, child-resistant dropper caps for markets that require them, tamper-evident screw caps with orifice reducers for pure essential oils, and even treatment pumps for the larger sizes. Bulb and collar colors can be matched to your brand palette, and pipette lengths are sized per bottle so the tip reaches close to the base and customers can draw out the last of the product. When you request a quotation, tell us which sizes will carry which closure, and we will quote the complete bottle-plus-closure system so there are no compatibility surprises at the filling line.
Quality Control and Standards
Every size in the family is produced under the same quality regime. Dimensional checks verify neck finish tolerances so closures seal consistently; annealing is verified by polarimetric inspection per ISO 7459; hydrolytic resistance of the glass surface is tested with reference to ISO 7458; and thermal shock endurance is validated against ASTM C149, relevant when filled bottles move between cold storage and warm retail environments. For brands exporting to the European Union, the packaging supports EU Regulation 1223/2009 cosmetic compliance documentation. Batch certificates and third-party test reports can accompany each shipment on request.
Wholesale Terms and Ordering
Stock sizes from 5ml to 100ml are available at wholesale quantities, and mixed-size orders are welcome. If you are planning your first import, our practical guide to importing glass bottles from China covers sampling, packing, and freight in detail. Send your size list, target quantities, and closure preferences through our contact page and we will respond with a consolidated quotation and technical drawings, typically within two working days.
Frequently Asked Questions
Can I mix different sizes in one wholesale order?
Yes. Mixed-size orders across the 5ml to 100ml family are common, and quantities across the family can often be combined to reach better pricing tiers. Send your size breakdown and we will quote the consolidated order.
Do all sizes use the same dropper cap?
Yes. Every size in this family shares the standard 18mm DIN neck finish, so one closure SKU fits the entire range. Pipette lengths are matched per bottle size so the tip reaches near the base.
Is green glass enough protection for light-sensitive formulas?
Green glass provides moderate light screening, between flint and amber. For highly photosensitive formulas such as retinoids or citrus oils, we recommend reviewing your stability data and considering the amber variant of the same family, which is also available.
What closures are available besides droppers?
The 18mm neck accepts calibrated pipettes, child-resistant caps, tamper-evident caps with orifice reducers, and treatment pumps for larger sizes. Tell us which closure goes with which size and we will quote the complete system.
What is the MOQ for each size?
MOQ varies by size and whether bottles are stock or decorated. Family orders can often share volume tiers; our MOQ guide explains the mechanics and we confirm exact tiers at quotation.
Can these bottles be customized with our branding?
Yes. Options include silk-screen printing, hot stamping, acid-etch frosting, and spray coating. Because the label panel geometry is shared across the family, one artwork system scales cleanly from 5ml to 100ml.
