MONDAY Haircare VOLUME and Vassia Labs Volumizing Shampoo both sell the idea of fuller-looking fine hair, but they take different approaches to fragrance, packaging and price position. The smarter comparison asks what you are willing to pay for, and which formula characteristics you actually care about.
Quick answer: MONDAY is a legitimate mass-market option for shoppers who enjoy a light gardenia scent and want budget-accessible volume. Vassia is a more expensive option for those deliberately avoiding added fragrance and seeking its particular fine-hair formula. No credible head-to-head trial establishes that Vassia lifts roots more.
Editorial disclosure: Vassia Labs publishes this buyer comparison and sells the shampoo linked below. We have no independent laboratory head-to-head comparison with the named products.
In this guide
Same fine-hair customer, different buying proposition
MONDAY's current VOLUME range is specifically positioned for thin, fine and flat hair. Its official descriptions refer to cleansing and lightly conditioning ingredients, along with hydrolyzed collagen in the shampoo formulation shown on its site. Depending on market and product generation, there can be differences between MONDAY ingredient listings, so verify the label for the actual bottle.
Vassia focuses more narrowly on fragrance-free cleansing and cosmetic root movement. Its published ingredient list contains cleansing surfactants such as sodium cocoyl isethionate, cocamidopropyl betaine, sodium methyl cocoyl taurate and lauryl glucoside, alongside conditioning agents and botanicals. Ingredients alone do not predict which finished shampoo will make hair feel lighter.
A gardenia fragrance versus no added fragrance
MONDAY describes a subtle gardenia scent and lists Parfum (Fragrance) in its official VOLUME shampoo information. That can be a positive for someone who likes a pleasant shower fragrance. It is less appealing when avoiding added perfume is a firm buying requirement.
Vassia describes its product as no-added-fragrance. Its raw materials may still have a natural odor, but it does not intentionally add a perfume. Neither option should be treated as guaranteed safe for every person with a sensitive or reactive scalp. Suspected allergy warrants a specific ingredient review.
What 'sulfate-free' marketing does and does not tell you
Some versions of MONDAY's VOLUME ingredient list show surfactants such as disodium laureth sulfosuccinate and sodium C14-16 olefin sulfonate. These are not the same molecules as SLS, and a list of cleanser names is not a reliable ranking of finished-formula harshness.
Likewise, Vassia's sulfate-free statement does not guarantee it cleans less or is appropriate for all skin types. Compare actual oil removal, scalp comfort, how easily your lengths detangle and the quantity of conditioner needed afterward.
Which one should you buy?
| Question | MONDAY VOLUME | Vassia Labs |
|---|---|---|
| Main target | Fine, flat and thin hair | Fine, flat and thinning-looking hair |
| Fragrance | Gardenia scent; Parfum on official INCI | No added fragrance |
| Pricing | Mass-market; varies by US retailer and bottle size | Premium $44.99 / 10 fl oz US list |
| Product selection | Widely distributed branded VOLUME shampoo and conditioner | One fixed shampoo for a narrow use case |
| Evidence | Manufacturer descriptions and ingredient information | No head-to-head evidence proving greater root lift |
| Who benefits most | A scent-friendly shopper prioritizing price | A fragrance-avoidant shopper valuing the stated formula |
When is paying a premium justified?
Compare the same unit and actual checkout costs, not a promotional supermarket bottle with a full-price premium order including shipping. If a less expensive MONDAY shampoo meets your volume and scent requirements, that may be the more economical purchase. The case for paying more for Vassia should be a specific need such as intentional fragrance avoidance and a preference for its finished formula, not an unsupported claim that cheap shampoos cannot work.
Try to change only the shampoo during a comparison. Keep styling products and drying method the same, because both strongly affect the appearance of lift.
Frequently asked questions
Is MONDAY VOLUME fragrance-free?
No. The brand's official VOLUME information describes a gardenia scent and includes Parfum.
Is MONDAY automatically worse because it is cheaper?
No. Price is not a direct measurement of cosmetic volume performance.
Does sulfate-free always mean gentle?
No. How the full formula performs and your individual response matter more than a single label term.
When Vassia Labs fits this routine
Our Vassia Labs Volumizing Shampoo is a 10 fl oz fragrance-free, sulfate-free, silicone-free cosmetic cleanser marketed for fine, flat and thinning-looking hair. The verified US one-bottle list price is $44.99. Its role here is lightweight cleansing before styling, not a promise of permanent fullness, hair regrowth or damage repair.
Sources and further reading
Updated October 19, 2026. Product formulations, brand claims, availability and prices can change; check the current US product page or the physical bottle. Advice is educational and does not replace individualized assessment for scalp symptoms or hair loss.
