Private Label Brightening Serums

Offer customers the glow they crave with private label brightening serums. Get premium formulas, no-hassle production, and easy scaling with RainShadow Labs!


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  • FDA-Registered & ISO-Certified Manufacturing

    Stringent quality control ensures safe, effective skincare products.

  • Clean, Cruelty-Free Beauty

    Naturally derived, organic ingredients with no harmful additives. 100% cruelty-free – never tested on animals.

  • Low Minimum Order Quantity

    Buy Direct / Wholesale with no minimum order. Private Label Stock requires just a 10-gallon minimum, while custom formulations start at 25 gallons.

6 products

Now Offering Pay Later with PayPal

You can now split your RainShadow Labs purchase into manageable payments with PayPal’s Buy Now, Pay Later. Launch your private label skincare line today—pay in 4 interest-free, or monthly with a fixed interest rate.

Select “Pay Later” at checkout and keep cash flow on your terms.

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Build Your Skincare Brand With Private Label Brightening Serums

Consumers are always searching for effective brightening serums that deliver glowing, even-toned skin. With RainShadow Labs, your brand can provide premium formulations without the challenges of in-house production.

Whether you need ready-made serums or a custom formulation, we make private label skincare simple, scalable, and stress-free.

Choose From Our Brightening Serums

Each serum in our collection is expertly formulated to support radiant, healthy skin. Choose from:

Work With an Industry Leader in Skincare Manufacturing

Since 1983, RainShadow Labs has specialized in private label, custom formulation, and bulk skincare manufacturing. Our products are developed in an FDA-registered, ISO-certified facility, ensuring the highest quality and safety standards.

Bulk Orders and Custom Formulations 

We offer two flexible solutions to help your brand scale:

Ready-to-Ship Bulk Serums

  • No minimum order quantity
  • Private Label stock filling available starting at 10 gallons
  • Fast fulfillment with orders shipping in 4 weeks

Custom Formulation for a Special Product Line

  • 25-gallon minimum batch size
  • $3000-5,000 formulation investment per product
  • The development process takes up to 24 weeks

Test Before You Invest With Flexible Sampling

Trying a product before placing a bulk order is essential. We now offer 2 oz. sample sizes for both bulk and private-label orders so you can confidently choose the best serums for your brand.

Packaging Guidance to Bring Your Brand to Life

While we do not offer packaging in-house, we have a network of trusted packaging vendors who can provide custom, high-end packaging solutions to match your brand aesthetic.

Take the Next Step in Growing Your Skincare Brand

You don’t have to create skincare from scratch to offer high-quality, effective brightening serums. With RainShadow Labs, you get scientifically backed formulations, and expert support at every stage.

Start with a bulk order or develop a custom formulation that sets your brand apart. Contact us today to explore your options.

FAQs About Private Label Brightening Serums

Can I add my own ingredients to these serums?

Yes. We offer custom formulation services, allowing you to modify an existing product or create something entirely new.

Do you offer fragrance-free options?

Yes. Many of our formulations are available fragrance-free, and we can also create custom unscented versions.

Do you test on animals?

No. We are 100% cruelty-free and do not test any of our products on animals.

What certifications do your products have?

Our facility is FDA-registered and ISO-certified, and we adhere to strict quality and safety standards.