Thailand Sunscreen OEM Manufacturing: Which Path Should Your Brand Take?

Why Sunscreen Is Harder Than Serums or Moisturizers

With serums or moisturizing creams, you can start from feel: absorbs quickly, no greasiness, pleasant scent. With sunscreen, the reverse applies—you begin with technical constraints, then optimize the sensory experience within what remains possible.

Three core constraints:

• **SPF is a measured result, not an advertising claim.** SPF and PA (or PPD, UVA-PF depending on test method) are determined by testing your finalized formula. Changing filter ratios, adjusting the base oil, or even swapping the film-forming agent can shift the result.
• **Filter systems dominate formula costs.** In many sunscreen lines, UV filter ingredients represent the largest share of raw material expense. This is why a sunscreen and a moisturizer of the same volume have very different cost structures.
• **Approved filter ingredients vary by market.** Each region has its own permitted UV filter list and concentration limits. A formula compliant in one market may need adjustment for another.

Practical outcome: if you plan to sell the same SKU across multiple countries, communicate this during your first meeting. Selecting a filter system compatible with all your target markets from the start is far simpler than reformulating after packaging is printed. This is the biggest difference between OEM sunscreen production and conventional skincare manufacturing.

ODM, OEM, or Full Custom: Three Paths and What Each Costs

When working with a skincare manufacturer, you typically face three routes. Choosing the right one at the start saves you many sample iterations.

**ODM — use an existing base formula from the manufacturer.** The factory already has proven sunscreen bases with historical testing data. You select a base, make sensory adjustments within what's allowed (fragrance, color, a few supporting actives), and focus your budget on packaging and brand building. This is the fastest and lowest technical-risk route for your first product.

**OEM — the manufacturer produces to your formula or specification.** Ideal if you already have a formula from a prior project, or have specific component requirements. You have more control, but must take responsibility for whether your spec is feasible.

**Full custom — co-develop an entirely new formula.** Choose this when you want real differentiation—perhaps a unique texture or proprietary filter system. The tradeoff is more sample rounds, higher development costs, and timelines dependent on test results.

One simple principle: if this is your brand's first product and you have no sales data yet, begin with ODM. Reserve your formula development budget for SKU two, once you know what customers actually want.

Filter Systems and Texture: Decisions You Must Lock In

Most of the discussion in a sunscreen project revolves around two questions: which filter system, and what texture?

For filters, the most practical classification is:

• **Inorganic (physical/mineral):** typically zinc oxide or titanium dioxide. Many brands choose this for sensitive skin and kids' lines. The challenge is white cast and heaviness if not properly processed.
• **Organic (chemical):** delivers thin, lightweight texture and easier high SPF claims, but permitted ingredients and concentration limits vary by market—check carefully for each region.
• **Hybrid:** most common on today's market because it balances protection level with sensory feel.

For texture, speak to your skincare manufacturer in your customer's language, not technical jargon: does your customer want matte or dewy finish, light concealing benefits or full transparency, will they layer makeup over it, and what's their climate?

Prepare two to three reference products on the market to describe the feel you want—not to copy, but so both sides understand each other faster. And accept tradeoffs early: higher SPF and stronger water resistance make a lightweight feel harder to achieve. Pick one strong point for your brand strategy, rather than demanding everything.

Packaging: Decide Early Because It Constrains Your Formula

Many brand owners leave packaging for the final stage. With sunscreen, this is an expensive mistake—packaging and formula are interdependent.

Key considerations:

• **Tubes** are the standard choice for cream and lotion sunscreens: economical, protect product from air well, portable. The downside is difficulty achieving a premium feel without investing in surface finishing.
• **Airless bottles or pump dispensers** feel more premium and offer better portion control, but your formula viscosity must fall within the range the pump can handle. A formula too thick will jam the pump or dispense unevenly.
• **Spray or liquid milk format** opens a different customer segment but brings separate transport and declaration requirements, especially with volatile components.

One overlooked factor: material compatibility. Some sunscreen ingredients may interact with the inner lining over time. So stability testing should run on your actual final packaging, not lab vials. If you switch packaging suppliers after testing, ask your manufacturer if revalidation is needed.

A note on MOQ: for OEM/ODM production, the standard is 1,000 units per SKU. Factor this into your cash flow and sales plan from day one, not afterward.

Documentation, Testing, and How to Talk About Your Product

The paperwork phase is where projects often stall—not because it's difficult, but because it starts too late.

Typical items on the checklist:

• **SPF testing** on your finalized formula, using the method your target market accepts. This is the only basis for your label claim.
• **Stability and packaging compatibility testing**, run on actual packaging.
• **Microbial and safety testing** per your market's requirements.
• **Product information dossier** for declaration in the import market.

On procedure: cosmetic registration rules, label requirements, and supporting documentation vary by country and change over time. Treat this article as reference and verify current requirements with local authorities or customs brokers in your sales region. Your skincare manufacturer and production partner supply technical documentation per product when you order; submitting dossiers in the import country usually falls to you or a regulatory service you hire.

Lastly, how you describe the product. Keep marketing claims within what testing has proven, and avoid absolute statements. Sunscreen labels and ads face stricter scrutiny than most categories, so get the wording right from the start—it's cheaper than correcting it later.

Pre-Engagement Checklist and Common Mistakes

Before sending an inquiry to a skincare manufacturer, prepare these six pieces of information. They drastically cut down the back-and-forth:

1. **Target markets** — which countries you'll sell in, and which are primary. 2. **Customer profile** — skin type, age range, planned retail price point. 3. **SPF and performance goals** — target SPF, water resistance needed, tone-up or clear preference. 4. **Required and restricted ingredients** — based on your brand strategy. 5. **Packaging direction** — format, volume, finishing budget. 6. **Sales plan** — distribution channels, number of SKUs planned in year one.

Three most common mistakes:

• **Locking packaging before locking formula.** Printing finishes, then discovering your formula doesn't work with the pump, or your SPF test result doesn't match what's printed.
• **Approving samples based on one person's feel.** Have at least five to seven people from your target customer group try it over several days under real conditions.
• **Launching too many SKUs at once.** One SPF level, one texture, do it well, then expand. If later you want to move into dietary supplements or drinks, that's a separate project with its own regulations—not an extension of your sunscreen line.

If you want one partner managing formula development, packaging, and regulatory paperwork rather than juggling lab, designer, and manufacturer separately, models like managed production partnerships (see 5fineglobal.com) are worth exploring alongside other options.