BUTTER-C
Body care
Body sunscreen OEM/ODM manufacturing
Body Sunscreen · Sun Lotion · OEM/ODM
Body sunscreen is applied over an area of skin many times larger than the face, so consumers expect very specific things: it should spread quickly, not stick to clothing, leave no white cast, not feel hot on the skin, and be reasonably priced for generous use. This category is also chosen for demanding conditions — the beach, outdoor sports, working in the sun — where sweat and water test how well the protective layer holds up. SPF, PA and water resistance must all be measured on the finished product itself before they go on the label. Butter-C offers full-service OEM/ODM manufacturing, from formula development and coordinating sun protection testing to a labeled finished product with its cosmetic product notification.
Formula base
UV filters, carrier base and film formers
Sun protection comes from the UV filters; skin feel and the durability of the protective layer come from the base and the film formers.
Organic filters
Filters from the permitted list, combined to cover both UVB and UVA; newer-generation filters offer good photostability and rarely need high concentrations.
Mineral filters
Zinc Oxide, Titanium Dioxide — gentle on sensitive skin and for children; they need surface treatment and good dispersion to limit white cast over large areas.
Carrier base
A fast-absorbing fluid emulsion, a quick-drying alcohol-based gel, or a clear oil base for sprays; chosen according to the desired feel and sales channel.
Film formers
Film-forming polymers help the protective layer adhere evenly and hold up against sweat and water; they determine whether a water-resistance claim is possible.
Key technical points
Four things that determine body sunscreen quality
Values measured on the finished product
SPF, PA or UVA values are measured on the final formula by an independent testing facility; any change to the formula or the filter supplier requires re-evaluation.
Even spreading over large areas
The texture must spread evenly in a few strokes; an uneven layer is the main reason skin still burns even when the product is used.
Non-greasy, no white cast
Oil ratio, filter type and mattifying powders are balanced to dry quickly, not stick to clothing and leave no white cast on darker skin.
Water and sweat resistance
Film formers and a water-repellent base keep the protective layer in place during sweating or swimming; a water-resistance claim is made only after testing by a standard method.
Three formulation directions
Three common body sunscreen formats
Body sun lotion
A fluid, fast-absorbing emulsion for daily use; pigments can be added for a light tone-up effect.
Sport and beach sunscreen
A water-resistant base with film formers; dry feel that holds up to sweat. Water resistance must be tested if it is to be claimed on the label.
Mist spray sunscreen
An alcohol or light oil base in a hand-pump spray bottle; convenient for reapplication. Directions should say to spray into the hands and then spread evenly, not to spray directly on the face.
Packaging designed alongside the formula
Flip-cap bottles, large tubes, spray bottles. Filters and oils can soften or stain some plastics; compatibility must be tested first.
Parameters we monitor
What our R&D lab measures on every sample
Below are the parameters Butter-C monitors during formula development and scale-up to production. Specific limits are agreed with you on the approved sample and then written into the product's in-house specification.
- SPF and PA
- Measured on the finished product by an independent testing facility according to recognized test standards.
- Water resistance (if claimed)
- Values measured after water immersion by a standard method; only the number of minutes actually measured is stated.
- UV filter content
- Tracked against the formula and checked on the finished product to ensure it stays within permitted limits.
- Emulsion stability
- Centrifugation, freeze–thaw cycling, storage at 40°C and 45°C; monitoring for separation, filter crystallization and color change.
- pH and viscosity
- Measured at 25°C; viscosity determines spreadability over large areas and sprayability.
- Microbiology and preservative challenge
- Tested at a GLP / ISO 17025-accredited laboratory; preservative efficacy (challenge) test according to ISO 11930.
- On-skin evaluation
- Dry-down time, tackiness, white cast, pilling, transfer onto clothing.
- Packaging compatibility
- Monitoring for plastic softening, staining and spray nozzle clogging.
Claims
Writing claims within the cosmetic scope
Sun protection values are verifiable numbers, so every number on the label must be backed by test results. Butter-C reviews the wording on labels and marketing materials while preparing the cosmetic product notification.
Sun protection with SPF and PA as tested
Instead of: total sun protection, blocks 100% of UV rays.
Helps protect skin from sun damage
Instead of: prevents skin cancer, treats sunburn.
Water resistant for the number of minutes tested
Instead of: fully waterproof, never washes off.
Instantly makes skin look brighter
Accurately describes the tone-up effect of pigments; instead of: skin whitening.
Reapplication directions
Clearly state to apply a sufficient amount and reapply after swimming, towel drying or heavy sweating.
Marine-friendly
Claim only with specific supporting evidence; there is no common standard for phrases such as "reef safe".
Manufacturing specifications
Current capabilities
- Texture
- Fluid lotion, cream, gel, liquid for hand-pump spray bottles; with or without a tone-up effect.
- Packaging format
- Flip-cap bottles, tubes, hand-pump spray bottles. Volume agreed when selecting packaging.
- Minimum order quantity
- Agreed per order.
- Testing
- Performed at a GLP / ISO 17025-accredited laboratory; sun protection values measured by an independent testing facility.
- Documentation
- Product Information File (PIF) and cosmetic product notification dossier prepared by Butter-C.
- Packaging
- Label design, printing and packing run in parallel with formula development.
Suggested product concept
Light tone-up body sun lotion
A product concept to help you visualize the possibilities — not a ready-made product for sale. The actual formula is developed to match your brand's positioning and price range.
Fast-absorbing fluid lotion
Shake gently before use and spread evenly over arms and legs in a few strokes; dries quickly and won't stick to clothing.
Broad-spectrum filter blend
Combines organic and mineral filters to cover UVB and UVA; values on the label as per test results.
Light tone-up
A moderate amount of pigment helps skin look brighter without a noticeable white cast.
Flip-cap bottle
Easy to carry and quick to dispense a generous amount for reapplication.
Customization options
What you can specify
The same product type can serve very different customers depending on the brand. Tell us your requirements in the areas below, and our team of pharmacists will develop a matching formula.
Target protection level
Target SPF and PA — the final values follow the test results on the finished product.
Filter type
Organic, mineral or a blend; a gentle direction for sensitive skin and children.
Texture
Fluid lotion, cream, quick-drying gel or spray.
Water resistance
Yes or no; if yes, additional testing time and cost are required.
Effect
Tone-up, transparent, or with moisturizing or cooling benefits.
Ingredient direction
Alcohol-free, fragrance-free, mineral filters only — please specify these from the start.
Further reading
Related topics
SPF: what it means and how it is tested
How sun protection values are measured and why they must be measured on the finished product (in Vietnamese).
Facial sunscreen manufacturing
How requirements differ between facial and body sun protection.
Body lotion manufacturing
When to keep body care and sun protection as separate products.
Cosmetic labeling rules
Mandatory content and directions for use on sunscreen labels (in Vietnamese).
How we work
From idea to finished batch
Eight steps and three milestones signed off by both sides: approved sample, notification number, finished batch. Step-by-step details (in Vietnamese) →
Get started
Tell us about the product you plan to launch
Send us your product direction and expected volume. Our team will get back to you during business hours (Vietnam time, GMT+7).
Head office: Huu Le village, Dai Thanh commune, Hanoi · Factory: Thanh Oai Industrial Cluster, Binh Minh commune, Hanoi, Vietnam
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