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Innovation in 
Personal Care.

Clinically Proven Products for Skin, Scalp and Nails.

Xenna Corporation


To provide consumers with unique, clinically proven, effective personal care products that fill unmet needs.


Founded in 1996 and based in Princeton, New Jersey, Xenna Corporation is focused on developing and distributing consumer products for hair, skin and nails that solve unmet needs with ease and minimal chemical ingredients. Those created have no parabens or preservatives and are clinically proven effective.  


The most established and largest brand is NONYX® Fungal Nail Clarifying Gel, an exfoliant of keratin debris where nail fungus thrives. It has been sold in Foot Care at national retail chains since 2004 and is available through McKesson, Cardinal Health and AmerisourceBergen.  Xenna’s newest brands are CalmScalp™ Topical Scalp Solution and CalmSkin Complete® Gel, formulated and clinically proven to reduce redness and scaling associated with mild to moderate psoriasis.


Founded and lead by Carol J. Buck, CEO, Xenna Corporation is a certified Woman-owned Business (Wbenc) and a member of ICMAD, the national association of Independent Cosmetic Manufactures and Distributors. It was ranked as one of New Jersey's Top Research Facilities in 2006 by NJ Biz. All manufacturing is Additional information is available through Dunn & Bradstreet. OUR PRODUCTS

Carol Buck, Founder & CEO of Xenna

Carol J. Buck

Founder & CEO


In 1996, Xenna Founder, Carol J. Buck began developing personal care products that today are sold across the country to millions. With business experience in advertising, consumer product marketing and pharmaceutical consulting, she had the knowledge base to launch her own personal care products company.

Her first product was a natural curl relaxer which successfully sold in Walgreens for several years. Her hair relaxer research led to an in-depth understanding of the protein keratin and opened the door to other applications. Because toenails and fingernails are comprised of keratin Carol realized, and later clinically proved, that another formulation would clear nails of keratin debris, the unsightly, discoloring build-up under nails where nail fungus thrives. Branded NONYX® Fungal Nail Clarifying Gel, this discovery put Xenna on the retail map. Today, Xenna continues to develop new products for skin, scalp, and nails. Ms. Buck is an active member of the Women Presidents' Organization, the Society of Cosmetic Chemists and the Diversity Alliance for Science. She lives in Princeton, NJ with her husband, a retired entrepreneur and novelist, and enjoys tennis and gardening in her spare time.​​


M.I.A. Columbia University; BA, Stanford University

Prior to founding Xenna, Ms. Buck was the Vice President of Princeton Group International, Inc., a healthcare industry consulting firm. Among her clients were Beth Israel Hospital, Ethicon (J&J), David Sarnoff Research Center, Cyanotech Corporation, Biofem, Inc., Ixion Biotechnology, North Shore University Health System (now Northwell Health) and Universal Health Communications. She was also Treasurer and a Board member of Atlantic Health, Inc., a firm established to build and operate outpatient cancer clinics worldwide. Earlier in her career, Ms. Buck was a Senior Product Manager at General Foods Corporation and an Account Supervisor within the advertising industry. In the early '90s Ms. Buck turned her focus to biochemistry and initiated the research and patents that form the framework for Xenna's personal care product lines and basic research.



Xenna products for healthy-looking skin, scalp and nails are clinically proven, vegan, free of animal byproducts, not tested on animals and manufactured in the USA.  Each is unconditionally money-back guaranteed (no time limit) should consumers not be completely satisfied with their results. 

NONYX Fungal Nail Clarifying Gel

NONYX Fungal Nail Clarifying Gel

Clears out fungus by removing keratin debris where nail fungus grows | 90% of nails significantly improve based on a 9-month, double-blind clinical study | Safe for use by diabetics with healthy feet | Results in clear, heathy-looking toenails and fingernails when used as directed | May be used with nail polish | 4 oz. bottle | Unconditionally money-back guaranteed

CalmSkin Complete


Reduces the appearance of scales, redness and cracking associated with mild to moderate psoriasis | Clinically proven | 72% saw improved appearance in 1 Week | Calms skin in 10 Minutes | Non-steroidal | Free of coal tar and salicylic acid | No preservatives or parabens | Contains calming avocado oil and soothing grapeseed oil | 4 oz. bottle with applicator tip cap | Unconditionally Money-back guaranteed

CalmScalp Topical Scalp Solution

CalmScalp Topical Scalp Solution

Soothes scalp with mild to moderate psoriasis  |  Reduces scales, redness, cracking, flaking and dryness on the scalp and hairline | Calms irritated scalp in 10 minutes as proven in a 6-week clinical trial | Results in healthy-looking skin and scalp | Dermatologist tested | Free of parabens and preservatives | Unconditionally money-back guaranteed



''Love this company. It's nice to have products that actually do what they say they'll do!"

- E.S Denver, Colorado

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