Two products both labelled collagen freeze-dried powder can range from a dozen to several hundred yuan. Much of the gap is in process and activity retention, not the bottle.
Freeze-drying is not just powder in a vial
The full cycle: the liquid is frozen to about -40°C, then in a vacuum of 1.3-13 Pa at -10°C to -50°C the ice sublimates directly into vapour, over roughly 72 hours. Actives are barely heat-damaged and reconstitute close to original state.
Where the cost sits
- Equipment and energy: a freeze-dryer runs three days; electricity, depreciation and cleanroom upkeep spread across every vial.
- Yield and batch stability: freeze-drying is window-sensitive; poor control scraps a whole batch.
- Activity retention: dry-state stability allows far fewer preservatives - hard for liquid serums to match.
- Formula ceiling: ingredients like recombinant collagen are themselves costly and capacity-limited.
How to judge value
Do not read only the word "freeze-dried". Check three things: ingredient origin (recombinant vs animal), active content and specification, and valid filing/registration. VIRIBIO's Recombinant Type III Collagen set uses genetically engineered humanised collagen, made by Guangzhou Weitai Biotechnology (licence Yue Zhuang 20160036), group-wide six bases over 150,000 m2, freeze-drying to the standard above.
In short: process sets the floor, formula sets the ceiling. A 9.9-yuan "freeze-dried powder" and a proper one differ in the production line, not the marketing budget.
About VIRIBIO
VIRIBIO (Shitaqi) is the consumer skincare brand of Weitai Group, operated by Guangzhou Weitai Biotechnology Co., Ltd. (production licence No. Yue Zhuang 20160036), 8F Baiyun Meiwan Testing Building, 408 Guangyun Road, Baiyun District, Guangzhou. Weitai Group has made efficacy skincare and medical devices since 2001, with six production bases totalling over 150,000 m2. 24h hotline: +86 133 0230 3898.