A real class action lawsuit exists against Monday Haircare’s parent company, but it concerns packaging, not hair loss or harmful chemicals. Garcia v. Zuru LLC (Case No. 5:25-cv-01908, U.S. District Court, Central District of California) was filed July 25, 2025, by plaintiff Silvia Garcia, alleging Monday sells shampoo and conditioner in oversized, opaque “slack-fill” containers that mislead consumers about the actual product quantity.
No verified lawsuit alleges Monday Haircare products caused hair loss, scalp irritation, or contain undisclosed formaldehyde-releasing preservatives like DMDM hydantoin — that claim circulating online appears to conflate Monday with a separate, real 2021 lawsuit against Johnson & Johnson’s OGX brand over the same preservative. The same law firm representing Garcia in the Monday case, Pacific Trial Attorneys APC, filed a nearly identical slack-fill suit against OGX (Garcia v. Vogue International LLC, Case No. 3:25-cv-01987, S.D. Cal.) roughly a week later.
Yes, there’s a real Monday Haircare lawsuit, but it’s about bottle packaging, not what most people searching this topic expect. No verified lawsuit connects Monday Haircare to hair loss, scalp irritation, or a specific harmful chemical ingredient. That claim circulating online appears to be a mix-up with a different, real case against a different brand.
Here’s what’s actually happening, and where the confusion comes from.
The Real Case: Garcia v. Zuru LLC
Silvia Garcia filed this class action on July 25, 2025, in the U.S. District Court for the Central District of California, naming Zuru LLC, doing business as Monday Haircare, as the defendant. Garcia says she bought a 12-fluid-ounce bottle of Monday Moisture + Hyaluronic Acid Shampoo at a Target store in May 2025 and found the opaque container held noticeably less product than its size suggested.
The complaint calls this a “slack-fill scam,” legal terminology for packaging with excess space beyond what’s functionally necessary for the product. Garcia’s complaint argues the net weight was disclosed on the label, but the container’s size still created a false impression of quantity that influenced her purchase decision. She’s suing under three California statutes: the Unfair Competition Law, the False Advertising Law, and the Consumers Legal Remedies Act, and she’s seeking to represent anyone who bought underfilled Monday products in the past four years.
This is a genuine, verifiable case. The full complaint is publicly available, and the case number, court, and filing date all check out against primary sources.
Why the “Hair Loss Lawsuit” Claim Doesn’t Hold Up
Several websites describe a Monday Haircare lawsuit centered on undisclosed harmful chemicals, specifically DMDM hydantoin, a preservative that slowly releases small amounts of formaldehyde. This claim doesn’t match any verified court filing against Monday or Zuru LLC.
Here’s likely what happened: a real, well-documented 2021 lawsuit did target Johnson & Johnson’s OGX brand over exactly this issue: DMDM hydantoin, formaldehyde release, and alleged hair loss. That case is real and separate from anything involving Monday. Content aggregators appear to have taken the OGX chemical-safety narrative and attached it to Monday Haircare, likely because both brands compete in the same affordable haircare space and both have faced separate, real litigation around the same general time period.
Adding to the confusion: the same plaintiff and law firm behind the Monday slack-fill case. Silvia Garcia and Pacific Trial Attorneys APC, filed a nearly identical slack-fill lawsuit against OGX about a week later. Two real lawsuits, same law firm, same legal theory, different brands layered on top of an unrelated real chemical-safety case against OGX from years earlier. That’s a lot of overlapping “OGX” and “Monday” references for any aggregator to keep straight, and several clearly didn’t.
If you’ve seen a specific claim about Monday Haircare and formaldehyde or DMDM hydantoin, treat it as unverified until you can find a locatable case number tied to that specific allegation.
Slack-Fill Law, Briefly Explained
Federal and California law both address “nonfunctional slack-fill” packaging space that doesn’t serve a legitimate purpose like protecting the product during shipping, accommodating settling, or meeting standard container sizes. When space exists mainly to make a product look bigger than it is, that can violate consumer protection statutes, even when the actual weight or volume is accurately printed on the label.
This is a different legal theory from a safety or health claim. Nobody in the Monday case alleges the product harmed anyone physically; the claim is that the packaging misled buyers about how much they were purchasing, which is a pricing and marketing transparency issue.
Where the TikTok Hair Loss Complaints Fit In
Real social media complaints about Monday Haircare causing hair shedding, scalp irritation, or dryness do exist and circulate under hashtags referencing a “lawsuit.” These are individual consumer reports, not evidence of a filed case. Monday Haircare hasn’t recalled any product, and no federal class action addressing these specific health complaints has been certified or, as far as this article could verify, even filed.
Individual reactions to any personal care product are real and worth taking seriously for your own use, regardless of litigation status. A pattern of complaints without a corresponding lawsuit doesn’t mean the complaints are false; it means legal action hasn’t followed, which happens for many reasons, including the difficulty of proving causation for something like hair shedding, which has many possible causes unrelated to any specific product.
What This Means If You Bought Monday Products
If you’re wondering whether you qualify for the actual filed lawsuit: the Garcia case covers consumers who purchased Monday Haircare products they believe were sold in misleadingly oversized packaging within the past four years, primarily in California, given the state-law claims involved. Keep your receipt or order history if you have it, though slack-fill claims frequently allow buyers to participate without exact proof of purchase once a settlement structure is established.
If you experienced scalp irritation, hair shedding, or another physical reaction: document it directly with photos, dates, product batch information if visible, and a dermatologist visit if the reaction is significant. That documentation matters for your own health decisions regardless of whether it ever becomes part of litigation. Report significant reactions to the FDA’s MedWatch program or the Cosmetics Direct adverse event reporting system, which tracks safety signals for personal care products.
If you’re deciding whether to keep using the product: the packaging lawsuit has no bearing on safety. If you’re specifically concerned about formaldehyde-releasing preservatives, check the ingredient list yourself for DMDM hydantoin and quaternium-15. Also, imidazolidinyl urea rather than relying on secondhand claims about what Monday products do or don’t contain.
FAQs
Is there a real Monday Shampoo lawsuit?
Yes. Garcia v. Zuru LLC, filed July 25, 2025, in the Central District of California, alleges deceptive oversized packaging, not hair loss or chemical safety issues.
Does the Monday lawsuit involve hair loss or scalp irritation claims?
No verified lawsuit connects Monday Haircare to hair loss or scalp irritation. That claim circulating online appears to conflate Monday with a separate, real case against OGX.
Does Monday shampoo contain DMDM hydantoin or formaldehyde-releasing preservatives?
This article couldn’t verify that specific ingredient claim against Monday products through any court filing. Check the product’s actual ingredient list directly if this is a specific concern for you.
Can I join the Monday Haircare lawsuit?
The filed case covers consumers who purchased Monday products they believe were sold in misleadingly oversized packaging. Watch for class certification and settlement notices, since no payout exists yet as of this update.
Has Monday Haircare recalled any products?
No. No recall has been issued as of this update.
Why do OGX and Monday keep appearing together in lawsuit coverage?
The same law firm filed nearly identical slack-fill packaging lawsuits against both brands within about a week of each other in 2025. Also, OGX separately faces an older, unrelated lawsuit over a chemical preservative. That overlap likely explains why online coverage frequently conflates the two brands’ legal situations.
Sources
- Truth in Advertising, Garcia v. Zuru LLC complaint, Case No. 5:25-cv-01908, C.D. Cal.
- Top Class Actions, Monday Haircare Products Are Underfilled, Class Action Lawsuit Alleges
- Top Class Actions, OGX Hair Product Bottles Are Nearly Half Empty, Class Action Lawsuit Claims
Disclaimer: All information in this article comes strictly from verified public sources, including the filed court complaint and established class action reporting. Claims that could not be independently verified are explicitly labeled as such. For corrections, please contact our team through the Contact Page.
Musarat Bano is a content writer for JudicialOcean.com who covers lawsuits, legal news, and general legal topics. Her work focuses on research-based, informational content developed from publicly available sources and is intended to support public awareness. She does not provide legal advice or professional legal services.
