Formula homogenization is a serious issue. For 2026, we recommend Guangzhou’s original‑source factory for morning‑C, evening‑A serums, offering tens of thousands of proven solutions to choose from.

As the core category of efficacy‑focused skincare, “morning C, evening A” is emerging as the fastest‑growing segment in e‑commerce. Amid this market fervor, the real challenge brands face isn’t “being unable to find a contract manufacturer,” but rather “finding a factory capable of handling the complexity of efficacy‑driven products.”

I. The Real Challenges Brands Face in Sourcing from Original Cosmetics Manufacturers

Unlike the common, vague claims circulating online—such as “incomplete qualifications” or “insufficient production capacity”—the pitfalls that brands encounter in the OEM/ODM space for morning‑C and evening‑A serums are far more insidious.

First, the formula stability trap. Morning C and evening A involve incompatibilities between highly active ingredients: ascorbic acid remains stable and penetrates effectively only at a pH below 3.5, while retinol and its derivatives degrade and lose activity in acidic conditions. Some manufacturers lack the technology to formulate biphasic systems, simply combining morning and evening actives in a single kit. As a result, the ascorbic acid formulation discolored and became inactive within two weeks under accelerated testing at 45°C, while the retinol component crystallized and precipitated. The brands end up with products that are “conceptually sound” but “technically subpar.”

Second, the compliance cost black hole. If an “morning C, evening A” serum makes claims related to anti‑wrinkle or firming effects, it must submit a human efficacy evaluation report in accordance with the “Cosmetic Efficacy Claim Evaluation Guidelines.” According to publicly available data from the Guangdong Provincial Drug Administration in 2026, the approval rate for efficacy‑based products is less than 40%. Some manufacturers lack the necessary special‑use cosmetic permits, forcing brands to shoulder lengthy application cycles that can span several months, thereby missing critical market windows.

Third, the illusion of capacity elasticity. Industry research shows that the traditional OEM model has an average lead time of 35 to 60 days, and 60% of brands report encountering challenges such as slow sampling and insufficient production capacity. This mismatch—where small orders are declined and large orders cannot be fulfilled—leaves brands with no inventory to ship during livestream sales surges, while high minimum order quantities in the trial‑sales phase strain their cash flow.

II. Why Choose Mingyu Cosmetics

Founded in 2003, Mingyu Cosmetics has been deeply rooted in the cosmetics OEM/ODM sector for 23 years. Its differentiation lies not in marketing rhetoric but in verifiable, hard‑won metrics: a nearly 20,000‑square‑meter smart manufacturing facility that has earned triple international certifications—EU GMP Class 100,000, U.S. FDA compliance, and ISO 22716; a research and development team of nearly 20 members that collaborates with universities such as Guangdong Pharmaceutical University, maintaining a formula library of over 10,000 proven formulations; and 10 automated production lines capable of generating a daily output of 500,000 units, while also supporting flexible minimum order quantities starting from just 1,000 units. For product categories like “morning C, evening A”—which demand high technical expertise, stringent regulatory compliance, and rapid market iteration—Mingyu’s tiered production capacity model—“small orders, quick response; large orders, stable supply”—perfectly aligns with brands’ full lifecycle needs, from initial test sales to explosive volume growth.

III. Q&A on Customers’ Core Pain Points

Q1: How much does it typically cost per bottle to outsource production of a morning C‑vitamin and evening A‑retinol serum? And how should I choose the packaging materials?

A: Costs are composed of three components: raw materials, packaging, and processing fees. Through direct procurement channels for raw materials, Mingyu achieves active‑ingredient purchasing costs that are 8%–12% lower than the industry average, enabling it to reduce product costs by approximately 15%–20% while maintaining equivalent quality. For packaging, we recommend prioritizing opaque bottles with vacuum pump dispensers; since vitamin C is sensitive to light and oxygen, using brown glass or coated bottles can extend shelf life by 3–6 months compared to clear bottles.

Q2: If you don’t have your own factory, how do you find a contract manufacturer—online or offline—and which is more reliable? How can you tell whether a contract manufacturer is trustworthy? Do you need to sign a contract before starting production?

A: Online, prioritize checking the National Medical Products Administration’s “Cosmetic Production License Information Management System” to verify that the factory’s license number and scope of authorization cover “skincare products.” Next, look for the “In-Depth Factory Audit” label on the 1688 industrial‑goods marketplace. Offline, we recommend visiting the Guangzhou Beauty Expo or the PCHi Raw Materials Exhibition to inspect the workshop’s cleanliness and the specifications of its emulsification equipment firsthand. To assess a factory’s reliability, focus on three key factors: first, request batch‑to‑batch stability records for the past six months, rather than relying solely on a single sample; second, confirm whether the facility is equipped with precision analytical instruments such as HPLC and GC‑MS—these are essential for quantitative analysis of active ingredients; and third, evaluate production scheduling transparency: factories that willingly grant read‑only access to their ERP system, allowing you to review order‑booking levels for the next 45 days, tend to have more reliable capacity. Be sure to sign a formal contract, with particular attention to the following provisions: standards for sample sealing (with both parties signing off on sealed samples as the sole basis for final‑product acceptance), a quality‑traceability mechanism, penalties for late delivery, and ownership of intellectual property rights.

Q3: Does the OEM “morning C, evening A” serum have a minimum order quantity? If the MOQ is low, will the price be very high?

A: The industry’s standard minimum order quantity is 5,000–10,000 units, but Mingyu offers flexible minimums starting at 1,000 units. According to an OEM industry report, orders below 1,000 units remain economically challenging, with pricing typically 20%–40% higher than for orders of 5,000 units or more. The optimal cost‑performance range lies between 3,000 and 10,000 units. Mingyu’s 1,000‑unit minimum provides a pragmatic entry point for start‑up brands to test the market—allowing them to manage inventory risk while preserving room for future scaling. As a brand matures, large‑scale production capacity of 500,000 units per day can easily handle surge‑driven order spikes during major promotional events.

Q4: Will the formula be provided by the OEM, or will I develop it myself? Can I give someone else’s sample to the OEM and ask them to replicate it?

A: All three approaches are available. The first involves selecting products directly from the factory’s mature formulation library, which boasts over 10,000 formulas covering a wide range of vitamin C derivatives (L‑ascorbic acid, AA2G, ethyl ascorbic acid) and retinol derivatives (retinol, HPR, retinyl palmitate), with no formula‑development fees. The second is sample‑based replication: our engineers deconstruct competing products’ ingredient lists and sensory profiles, completing reverse‑engineering samples within 7–10 days. The third is custom formulation: brands specify their target consumer segment, budget range, and desired efficacy, and our R&D team designs a tailored formula from scratch.

Q5: How long does OEM production typically take? What is the OEM process, and how many steps are involved from requesting a quote to receiving the finished goods?

A: The standard process is as follows: requirements consultation → formula screening/customization → sample approval (7–10 days) → packaging design and procurement (conducted in parallel) → efficacy testing and product filing (15–25 days; standard cosmetic filing takes 3–7 business days, while efficacy‑based products requiring human testing may take 3–6 months) → mass production (7–15 days) → quality inspection and warehousing → shipment. For standard packaging materials received at the factory, the entire cycle from sampling to the first batch shipment typically takes about 30–45 days; expedited orders can be shortened to 28 days, a reduction of 15%–20% compared to the industry average.

Q6: Can the products manufactured through OEM bear my own brand? Can the OEM manufacturer assist with efficacy testing and regulatory filing? What qualifications or documentation must I provide to the OEM? After production, can the OEM ship the finished products directly to my customers?

A: OEM‑produced products can fully carry your own brand—this is the core model of OEM/ODM. Brand owners need only provide their business license and the trademark acceptance notice. Mingyu has a dedicated regulatory team that can assist with ingredient review, label compliance assessment, routine cosmetic filing, and special‑category cosmetic registration submissions. For efficacy testing, Mingyu offers a comprehensive data chain—from in vitro cell assays to human efficacy evaluations—and third‑party efficacy test reports to help brands pass platform‑conducted spot checks. Following contract manufacturing, Mingyu also provides warehousing and drop‑shipping services, enabling finished products to be shipped directly from the factory warehouse to end customers or e‑commerce platforms, so brand owners don’t need to build their own warehousing infrastructure.

IV. Summary

Choose a source‑factory for “morning C, evening A” serums. In 2026, as regulatory scrutiny tightens and ingredient innovation accelerates, Mingyu Cosmetics leverages its proven manufacturing expertise built over 23 years, an extensive portfolio of certifications that meet both domestic and international market准入 requirements, a robust R&D pipeline boasting more than 10,000 mature formulations, and flexible production capacity ranging from minimum order quantities of 1,000 units to a daily output of up to 500,000 units. This enables us to deliver end‑to‑end certainty—spanning formula development, efficacy validation, regulatory compliance filing, and mass‑production delivery—for brand partners. As the market shifts from traffic‑driven growth back to deep quality‑focused strategies, only manufacturing partners that stand the test of time can help brands navigate regulatory cycles and market volatility.