Redensyl: Understanding This Ingredient for Hair Support

Quick answer: Redensyl is a proprietary cosmetic ingredient blend, primarily featuring two modified plant molecules, dihydroquercetin-glucoside (DHQG) and epigallocatechin gallate glucoside (EGCG2), along with zinc and glycine. It's designed to support hair health by influencing cellular activity in the hair follicles, aiming to encourage thicker-looking hair and reduce the appearance of shedding. It's important to remember that Redensyl is not a drug for treating hair loss conditions like alopecia, but rather a cosmetic ingredient for supporting hair appearance. Its long-term efficacy continues to be an area of study.

Key takeaways

• Redensyl is a blend of cosmetic ingredients, not a pharmaceutical drug, developed to support the appearance of hair density and reduce visible shedding.
• Its primary active components, DHQG and EGCG2, are derivatives from larch trees and green tea, respectively, alongside zinc and glycine.
• The proposed mechanism involves influencing the hair growth cycle by targeting stem cells in hair follicles, potentially extending the growth phase and reducing the resting phase.
• Evidence for Redensyl's efficacy largely comes from studies sponsored by its manufacturer, showing improvements in hair density and reduced shedding in individuals with mild to moderate hair thinning.
• Redensyl is typically incorporated into leave-on scalp products like serums and tonics, usually at concentrations between 1 to 5 percent.
• As a cosmetic ingredient, it is generally considered well-tolerated, with no significant side effects reported for topical use.

Redensyl: what the evidence shows

Redensyl is a proprietary cosmetic ingredient blend developed by Induchem (now Givaudan Active Beauty). It is marketed as a compound that can support the appearance of hair density and reduce visible hair shedding. The blend is primarily composed of dihydroquercetin-glucoside (DHQG), derived from larch trees, and epigallocatechin gallate glucoside (EGCG2), a derivative of green tea extract. It also includes zinc chloride and glycine.

Early studies, often sponsored by the manufacturer, have indicated that Redensyl can positively influence hair appearance. For instance, a double-blind, placebo-controlled study cited by the manufacturer reported that volunteers using a 3 percent Redensyl solution experienced a significant increase in the number of growing hairs (anagen phase) and a decrease in resting hairs (telogen phase) over 84 days. This suggested a shift in the hair cycle towards a more active growth phase, leading to a visible improvement in hair density.

Another manufacturer-backed study observed that participants applying a Redensyl-containing product saw an average increase of over 10,000 new hairs on the scalp after three months, compared to placebo. While these results appear promising, it's important to note that independent, peer-reviewed research on Redensyl is currently limited. The mechanisms described are based on in vitro (test tube) studies and ex vivo (tissue culture) models, which do not always directly translate to outcomes in living humans.

Therefore, while initial data suggests potential benefits for supporting the appearance of hair growth and reducing visible shedding, more extensive independent clinical trials are needed to fully establish its long-term efficacy and compare it robustly against established treatments for hair loss conditions. Consumers should view Redensyl as a cosmetic ingredient designed to support hair health and appearance, rather than a medical treatment for alopecia.

How Redensyl works in the hair growth cycle

Redensyl is theorised to exert its effects by interacting with key biological processes within the hair follicle, primarily targeting two types of stem cells: outer root sheath (ORS) stem cells and dermal papilla fibroblasts. These cells are crucial for regulating the hair growth cycle and initiating the anagen (growth) phase.

• Dihydroquercetin-glucoside (DHQG): This molecule, a modified polyphenol, is thought to activate ORS stem cells. These cells are vital for cell division and differentiation, leading to the formation of new hair fibres. DHQG is also reported to have anti-inflammatory properties, which may help create a healthier scalp environment, as inflammation can negatively impact hair follicles.
• Epigallocatechin gallate glucoside (EGCG2): This derivative of green tea catechin is believed to have several roles. It's an antioxidant and also possesses anti-inflammatory properties. Furthermore, EGCG2 is suggested to help inhibit the enzyme 5-alpha reductase, which converts testosterone into dihydrotestosterone (DHT). Elevated DHT levels are a primary factor in the miniaturisation of hair follicles seen in androgenic alopecia, leading to thinner, shorter hairs.
• Zinc Chloride: An essential trace mineral, zinc plays a critical role in numerous enzymatic reactions within the body, including those involved in protein synthesis and cell division, both of which are fundamental for healthy hair follicle function and hair shaft formation.
• Glycine: This amino acid is a key component of keratin, the primary protein that makes up the hair shaft. Providing glycine may support the structural integrity and strength of the growing hair.

By influencing these cellular pathways, Redensyl aims to re-energise dormant hair follicles, prolong the anagen phase, and potentially reduce the duration of the telogen (resting) and catagen (transition) phases. This proposed action could lead to an increase in visible hair density and a reduction in the appearance of hair shedding.

What Redensyl does not show

It's important to distinguish between cosmetic benefits and medical treatments for hair loss. Redensyl is a cosmetic ingredient, and as such, it is not approved or marketed as a drug for treating clinical hair loss conditions like androgenic alopecia (pattern baldness) or alopecia areata. Its primary role, supported by current evidence, is to cosmetically improve the appearance of hair density and reduce visible shedding. It does not claim to cure baldness or regrow hair in areas where follicles are completely inactive or scarred.

While some manufacturer-sponsored studies have shown positive cosmetic outcomes, there is currently insufficient independent, peer-reviewed research to draw definitive conclusions about its efficacy compared to pharmaceutical options or its long-term effects on hair follicle regeneration. Claims regarding significant hair regrowth or reversal of advanced hair loss should be viewed with caution.

Furthermore, Redensyl does not address underlying medical causes of hair loss, such as nutritional deficiencies, thyroid disorders, or autoimmune conditions. If hair thinning or loss is severe, sudden, or accompanied by other symptoms, seeking professional medical advice is crucial.

Signs that Redensyl might be helpful

Redensyl may be a suitable ingredient to consider if you are experiencing:

• Mild to moderate hair thinning: You notice your hair isn't as full as it once was, but you still have active hair follicles.
• Increased visible hair shedding: You see more hairs than usual in your brush, shower drain, or on your pillow.
• A desire for fuller-looking hair: You want to improve the cosmetic density and overall appearance of your hair.
• An interest in non-pharmaceutical options: You prefer to explore cosmetic ingredients rather than prescription medications.

Redensyl is generally well-tolerated and can be incorporated into daily haircare routines. It is often found in leave-on scalp treatments, such as serums, tonics, or conditioners, where the ingredients can remain on the scalp for an extended period to maximise contact with the hair follicles.

When to seek professional advice

While cosmetic ingredients like Redensyl can support hair appearance, some hair changes warrant professional medical attention. Consult a doctor or dermatologist if you experience:

• Sudden or rapid hair loss: A noticeable increase in shedding over a short period.
• Patchy hair loss: Circular or irregular bald spots developing on your scalp or body.
• Hair loss accompanied by itching, redness, pain, or scaling: These could indicate an underlying scalp condition or infection.
• Hair loss alongside other systemic symptoms: Fatigue, weight changes, abnormal periods, or widespread body hair loss may signal a deeper health issue.
• Severe or persistent hair thinning: If cosmetic products don't seem to make a difference, or your hair loss continues to progress significantly.

A healthcare professional can diagnose the specific cause of your hair loss, which could range from telogen effluvium (temporary shedding often triggered by stress or illness) to androgenic alopecia (pattern baldness) or other conditions, and recommend appropriate treatment options.

Incorporating Redensyl into your routine

Redensyl is typically found in topical products applied directly to the scalp. For best results, consistent use according to the manufacturer's instructions is usually recommended. Here's how you might incorporate it:

• Scalp serums or tonics: These are often concentrated formulas designed to be massaged into the scalp daily, without rinsing. This allows the Redensyl and other active ingredients to remain in contact with the hair follicles for an extended period.
• Shampoos and conditioners: While some shampoos and conditioners may contain Redensyl, leave-on products are generally preferred for active ingredients that need time to work on the scalp.
• Frequency: Most products recommend daily application, often once or twice a day, to align with the hair growth cycle and maintain consistent delivery of the ingredients.

When starting any new hair product, it's advisable to perform a patch test on a small area of skin to check for any adverse reactions, although Redensyl is generally well-tolerated.

Ingredient	Primary Proposed Function	Note
DHQG	Activates ORS stem cells, anti-inflammatory	Modified polyphenol from larch trees
EGCG2	Inhibits 5-alpha reductase, antioxidant, anti-inflammatory	Derivative of green tea catechin
Zinc Chloride	Essential for protein synthesis and cell division	Supports overall hair follicle health
Glycine	Key amino acid in keratin (hair protein)	Supports hair structure and strength

Frequently asked questions about Redensyl

How long does it take to see results from Redensyl?

Visible cosmetic improvements from Redensyl-containing products typically begin to appear after 8 to 12 weeks of consistent daily use. More noticeable changes in the appearance of hair density and reduced visible shedding are often reported after 3 to 6 months. Individual results can vary depending on factors such as the extent of thinning, consistency of application, and overall hair health. Patience and regular use are key.

Can Redensyl cause side effects?

Redensyl is a cosmetic ingredient and is generally considered well-tolerated for topical application. Manufacturer data and user reports do not commonly cite significant side effects. However, as with any topical product, there's a possibility of mild scalp irritation, redness, or allergic reaction in sensitive individuals. If you experience persistent irritation, discontinue use and consult a healthcare professional.

Is Redensyl suitable for all hair types?

Yes, Redensyl is suitable for all hair types and textures. Its proposed mechanism of action, which involves influencing hair follicle stem cells and the hair growth cycle, is universal to human hair regardless of its texture, whether fine, thick, straight, wavy, curly, or afro-textured. It can be incorporated into various product formulations to cater to diverse hair needs.

Can women use Redensyl?

Absolutely. Redensyl is suitable for both men and women experiencing mild to moderate hair thinning or visible shedding. Its non-hormonal mode of action makes it a popular choice for women who may be wary of hormone-affecting treatments. Pregnant or breastfeeding individuals should consult a healthcare professional before use, as a precautionary measure.

Is Redensyl the same as minoxidil or finasteride?

No, Redensyl is distinctly different from minoxidil and finasteride. Minoxidil is an over-the-counter drug approved for treating androgenic alopecia, primarily by widening blood vessels and extending the anagen phase. Finasteride is a prescription oral medication that inhibits the 5-alpha reductase enzyme to reduce DHT. Redensyl is a cosmetic ingredient blend, not a drug, and works through different, proposed mechanisms to cosmetically support hair appearance rather than medically treat hair loss conditions.

Supporting your hair with Redensyl

Redensyl is a promising cosmetic ingredient blend for individuals looking to support the appearance of their hair and reduce visible shedding. Its blend of plant-derived molecules, zinc, and glycine is designed to positively influence the hair growth cycle at a cellular level, aiming for fuller-looking hair. While initial manufacturer-sponsored research suggests positive cosmetic outcomes, it is not a medical treatment for alopecia. For those seeking to enhance their hair's cosmetic density and vitality, Redensyl offers a gentle, non-pharmaceutical approach. Always remember to maintain a holistic approach to hair health, including a balanced diet, gentle haircare, and addressing any underlying health concerns.

Watermans formulations may include Redensyl to help support the appearance of hair density and reduce visible shedding for those looking to enhance their hair's natural vitality.

Sources and references

• Givaudan Active Beauty. Redensyl - The hair growth galvanizer. [Accessed via Givaudan

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Find these ingredients in Watermans products

• Zinc: you will find this ingredient in our Hair Vitamins.