In 2024, deep conditioners dominated the hair care market, taking a majority 38.4% share thanks to their intensive nourishment and repair benefits, Market.us reports. The same source cites dry and damaged hair as a main concern, driven by increasing exposure to pollution, heat and chemical styling. Eva NYC's Therapy Session Deep Conditioning Hair Mask provides an example.
Eva NYC Therapy Session Deep Conditioning Hair Mask
The Eva NYC Therapy Session Deep Conditioning Hair Mask is said to transform hair while offering a luxurious, spa-like experience. Its rich, nourishing formula is infused with argan oil, jojoba oil and vegan protein, and is designed to deliver both visible results and a sensory experience.
In a consumer study involving 44 participants, 88% of users agreed that their hair felt thoroughly hydrated, soft and smooth after using the product, demonstrating its ability to deeply condition and restore moisture to dry strands.
In addition, 86% of participants noted that their hair looked and felt strong, healthy and moisturized, highlighting the mask’s ability to repair damage and improve overall hair health.
Beyond tangible benefits, the mask is described as a self-care essential, with 86% of users describing the experience of using it as a great way to indulge and unwind. This positions the Therapy Session Hair Mask as not just a treatment for damaged hair, but also a moment of relaxation and rejuvenation.
Ingredients: Eva NYC Deep Conditioning Hair Mask
Ingredients are listed as shown on the company website as of Nov. 20, 2025.
User Feedback: Eva NYC Deep Conditioning Hair Mask
Following are example user reviews (edited for style), selected for their anecdotal insights on product form and function.
- It's hard to find a deep conditioning mask that softens and repairs without making hair greasy and weighted down - but this is it. Only a little bit is needed to really focus on the ends My hair looks like I just had a trim.
- I am a dry hair, untamable and frizzy-haired girl and this really treats my hair without weighing it down. It is easy to rinse out and my hair is left feeling smoothed, and looking shiny and healthy.
- Lush and good-smelling, this mask is a pleasure to use and it utilizes vegan ingredients. My very long, thick, wavy and colored hair responds well to this product and feels softer and smoother after each use.
- My hair became smooth like a baby's, even though my hair is dyed. It appeared beautiful and well-groomed, like I'd just been to an expensive salon.
- The argan oil and plant proteins hydrate intensely, repair damage and banish frizz; the mask leaves hair silky, strong and salon fresh.
Formulation Considerations for Deep Conditioning
Some years ago, Rigano explained how many approaches can be used to fight hair damage and aging, such as: repairing hair structure to recover as much of its integrity as possible, and treating hair with specified ingredients to increase strength and resilience.
He added it is important to consider that any hair care treatment must take into account a few major factors. The appearance of the treated hair must be pleasant and shiny, and its feel soft and manageable. The amount of residue left on the scalp and the hair should be negligible and non-noticeable.
Also, for leave-on products, the drying time should be fairly fast. In other words, any vehicle for hair treatments should provide a perceivable hair conditioning effect without any stickiness or excessive build-up.
According to Rigano, generally, hydro-alcoholic vehicles are preferred. By careful management of the alcohol content and hydrotropes, i.e., humectants, one can create a fairly quick-drying system with adequate solvent power for all lipophilic active principles, refreshing effects through alcohol evaporation and satisfactory hair manageability. Moreover, hydro-alcoholic systems homogenously redistribute sebum from the roots and scalp, giving hair good manageability and a soft feel.
In some cases, oil vehicles also are used. When diluted with volatile silicone, these can provide a light application feel. Oils supply the hair with gloss and shine, especially in the case of damaged hair, as they modify the interference of incident light with the hair shaft. So-called dry oils such as isopropyl myristate and di-isopropyl adipate are typically preferred because their residual feel on hair is non-greasy.
Another way to distribute ingredients in hair without excessive build-up is via a quick-breaking foam. Its initial voluminous application thoroughly wets hair, and after the solvent evaporates and the propellant disappears, the formula evolves to leave a soft-touch coating on hair.
Finally, rinse-off products like conditioners and hair masks might also be employed. In these cases, the conditioning effect is provided by monomeric or polymeric cationics and substantive active principles. These latter compositions include a broader selection of active molecules, as such formulae may associate in the form of an emulsion, being hydrosoluble with lipophilic ingredients.
