Acid-etch frosting is the cosmetic standard: a finished high-flint bottle is chemically etched to a fine, even, silky satin that is part of the glass, cannot chip or lift, and is quoted per bottle by size at a decorating minimum of 2,000–5,000 pieces per shape. Spray frost is a translucent coating at about RMB 0.5–1.1 (≈USD 0.07–0.15) per bottle, also 2,000–5,000 per shape, that allows gradients and tints but must pass a 3M 810 cross-hatch pull and ≥2H pencil hardness because it can scuff. Sandblasting is mechanical: a coarser, more matte, slightly greyer surface that suits deep logos and heavy fragrance flacons, is quoted per piece at a typical partner-factory range, and holds fingerprints and skin oil more than an etch. For a skincare bottle, specify acid etch; for a coloured or gradient frost, spray; for carved, deep-relief effects on thick glass, sandblast.
Three processes, one word on the quote
All three start with a clear stock bottle from a forming plant, usually in high-flint glass — the default for frosted items because its low iron keeps the frost white rather than green. What happens next is done at a decoration plant, so a frosted glass quote has two lead times and two quality gates inside it.
- Acid etch — the bottle is dipped in or coated with an etching compound that dissolves the surface to a uniform micro-texture. The frost is the glass itself. On the glass industry's own cost sheets it is quoted "per bottle, by size".
- Spray frost — a translucent coating is applied on the standard spray line: seven-step pre-treatment, primer, mid-coat and top coat, 20 minutes' drying. The frost is a film on the glass.
- Sandblast — abrasive grit is blown at the surface through a stencil or over the whole body, mechanically roughening it. The frost is the glass, but a coarser texture than an etch.
The comparison
| Factor | Acid-etch frost | Spray frost (translucent coating) | Sandblast |
|---|---|---|---|
| What the frost is | Chemically altered glass surface | A sprayed film on the glass | Mechanically abraded glass surface |
| Look and feel | Fine, even, silky satin; light diffuses softly; white on high-flint | Adjustable: translucent white, tinted, gradient, soft-touch; can look slightly plastic in strong light | Coarser matte; slightly grey; strong for deep logos and relief; texture visible up close |
| Tooling | None | None (fixtures and colour match) | Stencil for partial designs; none for full-body |
| Indicative add-on | Per bottle, by size (typical partner-factory range) | RMB 0.5–1.1 ≈ USD 0.07–0.15 per bottle by coverage and colour difficulty | Per piece, by area and depth (typical partner-factory range); higher for stencilled designs |
| Indicative MOQ | 2,000–5,000 per shape via partner factories; frosted stock shapes from about 1,000 | 2,000–5,000 per shape | Typical partner-factory range; small artisan runs possible on hand-finished flacons |
| Factory-gate lead time | Inside the 30–60 day glass window; +5–7 days if printed after | 30–40 days sprayed; samples 10–14 days | Confirm per project; stencil artwork adds days |
| Durability | Cannot chip, lift or peel; scuff-resistant; 75% alcohol wipe safe | As good as its specification: 3M 810 cross-hatch no lift; pencil ≥2H; 75% ethanol 12 h migration; can scuff if under-specified | Cannot chip or peel; holds fingerprints and oil; can be marked by hard contact |
| Colour and gradient | White frost only; colour comes from tinted glass beneath (amber, cobalt) or print on top | Any tone, gradient, two-tone; matched to a golden sample | Monochrome; stencilled contrast between frosted and clear areas |
| Recycling | Glass, mono-material | Coated glass — sorted by the local scheme | Glass, mono-material |
| Suits | Serum, toner and essential-oil bottles; the skincare default | Coloured or gradient frost; matching a sprayed plastic family | Thick fragrance flacons, decorative jars, deep relief logos |
Look: what the eye and the hand notice
Acid etch gives the finest, most even texture because the reaction is uniform over the surface — the satin skincare buyers mean by "frosted", with no visible grain. Spray frost imitates it well at arm's length and is the only route to a coloured or gradient frost, but a thick film softens embossing and can read as a coating in direct light. Sandblast is visibly rougher: matte rather than satin, slightly grey, with a grain up close — an asset on a heavy flacon with a deep-relief logo, a liability on a 30 ml serum bottle where fingerprints and skin oil darken it with use.
Cost and MOQ: where the money sits
None of the three carries tooling. The minimum is the decorating line's set-up, so all three sit at 2,000–5,000 pieces per shape — under the 5,000–10,000 industry floor for cosmetic packaging generally and far under the 30,000–200,000 furnace floor for made-to-order coloured glass. Frosted stock shapes exist at some partner factories from about 1,000 pieces. Acid etch is quoted per bottle by size, spray frost at about RMB 0.5–1.1 (≈USD 0.07–0.15) per bottle; sandblast is priced per piece by area and depth and rises when a stencilled design means masking each piece. The decoration price list is on glass bottle specifications; the thirteen processes with their MOQ effect are on decoration process comparison.
Durability: what is tested
An etched or sandblasted surface is glass; it cannot chip or lift. Spray frost is a film, so it is signed against the same adhesion tests as any sprayed bottle. The QC limits partner factories work to are these.
| Check | Acid etch / sandblast | Spray frost |
|---|---|---|
| Frost position | Frost stops below the thread root; sealing land and thread untouched | Coating stops below the thread root |
| Bright spots (unfrosted pinholes) | None on the front face; sides ≤5 of ≤0.8 mm; base ≤5 of ≤1.0 mm | Film defects instead: pinholes, orange peel, sagging, cissing, peeling and the rest of the 16 named coating defects |
| Adhesion | Not applicable — no film | 3M 810 tape over a 2 mm cross-hatch, pulled at 45°: no lift; pencil hardness ≥2H |
| Chemical | One pass of a 75% alcohol cloth removes soiling without damaging the finish | 75% ethanol at 48°C for 12 h: no colour into the solvent, no softening |
| Thermal cycling, filled | 48°C 48 h and −15°C 48 h: no cracking or change after recovery | Same, plus no coating change |
| Glass integrity | Thermal shock GB/T 4547; annealing GB 4545 on a polariscope; drop 1.5 m at 45° filled | Same |
| Print on top | 3M 600 tape over print and hot-stamp: no lift; hot-stamp loss ≤0.5 mm² | Same |
| Inspection | 500–550 lux, 30–35 cm, 45 ± 15°, ≤12 s per piece against the golden sample | Same |
For an etch or a blast, write down the bright-spot limit: a pinhole of clear glass is what the consumer sees first. For a sprayed frost, the cross-hatch pull and the ethanol rub separate a coating that lasts from one that scuffs in a wash bag.
Which to specify
- Acid-etch frost for serum, toner, dropper and essential-oil bottles: the finest look, no film to fail, the cosmetic standard. Frosted amber or tinted glass is the usual choice for oils that need light protection, since frost diffuses light but does not block it.
- Spray frost when the frost must be coloured, gradient or matched to a sprayed plastic family, and the specification carries the adhesion and ethanol tests.
- Sandblast for heavy fragrance flacons, decorative jars and deep stencilled logos on thick glass, where the coarser grain is the point.
The related decision — whether the bottle should be frosted at all, or amber, or clear — is in frosted vs amber vs clear glass for a serum bottle. Stock frosted formats and glass grades are on glass bottles, minimums by route on the MOQ index, the inspection gates on our QC standards, and the questions that establish which of the three a supplier actually means by "frosted" are in how to evaluate a China packaging supplier.
Vella is a Guangzhou-based beauty packaging solutions provider — a sourcing partner working with vetted partner factories operating to ISO 22716 / GMP — and names the process on the quote, holds forming plant and decoration plant to one golden sample, and writes the bright-spot or adhesion limit into the drawing. A frosted range across bottles, droppers and jars is on skincare packaging solutions.
Frequently asked
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