How long does the bottle last if applied twice a day?

I usually just do once per day after I shower and wash my hair in the morning. A bottle typically lasts me 2 1/2 to 3 months.

What is the difference between this and spectral.dnc-ns? is this greasy?

The two formulas are different formulas and as with other types of treatments, while one might be more effective for one person, the other formula might be more effective for someone else. Below is an explanation. There doesn't seem to be a clear favorite between the two. They both work well and preference is very individual and sometimes is just based on preference of the type of application. ***Spectral.DNC-S is a completely new innovation for the treatment of thinning hair. After several years of exhaustive research , DS Laboratories has discovered several compounds from natural sources which mimic and exceed the activity of pharmaceutical treatments but with greatly reduced side effects. These compounds are deployed in a unique cosmetic formulation. It is our most potent and advanced formulation to date and provides an entirely new mechanism of action. It has recently been reformulated to solve the issues of the greasy feeling and clogged applicators and now has a much better feel and texture. Furthermore, this formulation utilizes powerful ingredients in two separate chambers that enables the use of materials that are otherwise not compatible and also a higher concentration of ingredients then a single formulation could hold. Ion channels. Multiple ingredients open ion channels within scalp cells to enable the flow of proteins and enzymes for superior results. Dihydrotestosterone. Key ingredients control DHT production to help keep follicles healthy and normal. Botanicals.Extensive use of botanical compounds, instead of chemicals such as minoxidil and finasteride, delivers hair-health benefits naturally. Dual-chamber system. Separate chambers keep ion-channel openers and synergistic compounds stable until users combine them for maximum activity. ***Spectral.DNC-N designed to surpass the limitations of minoxidil therapy. The first treatment to utilize Nanoxidil™, this compound is a complex matrix that opens ions channels within cells and exerts multiple mechanisms of action to address over a dozen triggers that lead to hair fall out. A true innovation, Nanoxidil™ dramatically increases hair density and promotes the overall health of the scalp. This is combined in a comprehensive formulation in Spectral.DNC-N with multiple auxiliary agents implementing a unique multi-lateral therapy. The molecule responsible for the ion channel opening effect has a lower molecular weight than minoxidil and features several important advantages over the now outdated minoxidil compound. Both products also features the latest nanosome encapsulation technology to enable more targeted absorption to the base of the hair follicle. This delivery system causes the active ingredients to penetrate and absorb for 12-14 hours per application vs. only 15 minutes for other topical treatments on the market. No. Spectral DNCN or DNCS topical should not leave your hair oily or greasy. While it is a topical hair applicant, by nature you'll feel and see "wet" look but should not feel greasy or oily as its a water-based formula.

Manufacturer	DS Laboratories
Manufacturer reference	CSF FBA 3 MO
Package Dimensions	17.91 x 13.89 x 6.3 cm; 56.7 g
ASIN	B07T253XK3

Spectral.CSF Hair Thickening, Strengthening Hair Serum for Women - Supports Hair Growth, Minimizes Shedding, Experience Thicker, Fuller, Stronger Hair (2 fl oz) - Pack of 3

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