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

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.