Szampon z keto w walce z AGA

[piotr1281 10]

Wklejam artykuł odnośnie skuteczności szamponu z keto w walce z androgenówką , telogenowym i łzs

 

Clinical studies: is ketoconazole effective for hair loss?

As is always the case with hair loss research, context is key. And when looking into the effectiveness of ketoconazole, we need to evaluate all clinical studies with several things in mind:

1. Was the ketoconazole tested on androgenic alopecia or other hair loss disorders?
2. Was the formulation strength 1% or 2%?
3. What, exactly, was measured?

To date, there are only four clinical studies on ketoconazole and hair loss (that we could find). As such, we’ll present them in detail.

Ketoconazole Shampoo: Effect of Long-Term Use in Androgenic Alopecia

Full text: Piérard-Franchimont et al., 1998

Study one:  2% ketoconazole versus a normal shampoo

• Who: 39 male only-AGA-subjects
• What: 2% ketoconazole shampoo versus a normal shampoo. During the study duration, 27 men used ketoconazole while 12 men used a normal shampoo. There were also 22 non-AGA-controls – half of them testing ketoconazole; half of them trying normal shampoo.
• How long: 2-4 times per week for 21 months
• Measurement: AGA pilary index (PI). This was defined as the percentage of hairs in anagen (A) x average diameter (D, μm) of the hair shafts 1.5 cm from the hair bulb.
• Results:
  • PI of non-AGA-controls remained unchanged, no matter the type of shampoo used (ketoconazole versus normal shampoo).
  • PI of only-AGA-subjects with unmedicated shampoo showed a slow linear decrease over time, while ketoconazole group “yielded a progressive PI increase that became evident after a 6-month survey and apparently reached a plateau value after about 15 months”.
• Takeaways:
  • In men without androgenic alopecia, ketoconazole doesn’t improve anagen hair counts or hair shaft diameter
  • In men with androgenic alopecia, ketoconazole improes both anagen hair counts and overall hair shaft diameter

Study two: 2% ketoconazole versus 2% minoxidil

• Who: 8 male only-AGA-subjects; 4 using ketoconazole, and 4 using minoxidil
• What: 2% ketoconazole shampoo (vs. 2% minoxidil lotion)
• How long: ad libitum (i.e., as often as desired) for 6 months
• Measurements: hair density; hair shaft diameter and the corresponding sebaceous gland
• Results:
  • “A 7% increase in the median hair shaft diameter was yielded by both the [ketoconazole] shampoo and minoxidil + unmedicated shampoo combination.”
  • “A 19.4% decrease in the mean sebaceous gland area was observed in the [ketoconazole] group. In contrast, the same variable increased by 5.3% in the minoxidil + unmedicated shampoo group.”
  • Ketozonazole improved density of hair by 18% compared to minox by 11%.
• Takeaways:
  • Ketoconazole increases hair shaft diameter by 7%, similar to minoxidil
  • Ketoconazole decreases sebaceous gland size by nearly 20% – possibly due to its anti-fungal effects. In other words, ketoconazole kills off pathogens that over-colonize, and thereby over-enlarge,  the sebaceous glands. This was unique to ketoconazole (minoxidil did not have this effect).
  • Ketoconazole improves hair density nearly twice as well as minoxidil

Key points:

These studies are all on men with AGA only, all of whom tested 2% ketoconazole as a shampoo.

The results all show significant improvements to hair density, as well as prolonged anagen phases and hair diameter. Moreover, one study also found that ketoconazole decreased sebaceous gland size – most likely a result of its ability to kill off pathogens overcrowding those sebaceous glands. For these reasons, it’s not unreasonable to assume that ketoconazole might also decrease sebum output.

Nudging hair shedding by antidandruff shampoos. A comparison of 1% ketoconazole, 1% piroctone olamine and 1% zinc pyrithione formulations

Full text:Piérard-Franchimont et al., 2002

• Who: 150 men presenting with telogen effluvium related to androgenic alopecia associated with dandruff, separated in three groups with different shampoos: 50 men on 1% ketoconazole, 50 on 1% piroctone olamine, and 50 on 1% zinc pyrithione
• What: 1% ketoconazole shampoo versus two other anti-dandruff shampoos
• How long: 2-3 times a week, for 6 months
• Measurements: hair shedding, hair density, anagen hair percentage, mean proximal hair shaft diameter, sebum excretion rates
• Results:
  • Pruritus and dandruff cleared rapidly in all three shampoo groups
  • Hair density remained unchanged in all three shampoo groups
  • Hair shedding decreased by 17.3% in the ketoconazole group, 16.5% in the piroctone olamine group, and 10.1% in the zinc pyrithione group
  • Anagen hair ratio increased by 4.9% in the ketoconazole group, 7.9% in the piroctone olamine group, and 6.8% in the zinc pyrithione group
  • Sebum excretion rate decreased by 4.8% in the ketoconazole group, 2.9% in the piroctone olamine group, and 5.5% in the zinc pyrithione group

 Key points:

The men featured in this study have telogen effluvium and androgenic alopecia. And, encouragingly, it seems like 1% ketoconazole shampoo 2-3 times per week lessened hair shedding by ~20%, increased hair shaft thickness by ~5%, and decreased sebum output by ~5%.

The bottom-line: comparing across studies, 1% ketoconazole isn’t as impressive as 2%,  but the results are still there. For men (and women) suffering from both TE and AGA, 1% or 2% ketoconazole might be a great intervention (among other treatments).

Comparative Efficacy of Various Treatment Regimens for Androgenetic Alopecia in Men

Full text: Khandpur et al., 2002

• Who: 100 male only-AGA-subjects randomized into four groups:
  • 30 finasteride
  • 36 finasteride + minoxidil
  • 24 minoxidil
  • 10 finasteride + ketoconazole
• What: 2% ketoconazole shampoo + finasteride 1mg oral/day (vs. finasteride vs. finasteride + 2% minoxidil vs. 2% minoxidil)
• How long: 3 times a week for 1 year
• Measurements: patients’ self-assessment and physicians’ assessment. Photographs were taken.
• Results: finasteride + minoxidil and finasteride + ketoconazole reap the best improvement scores for both self- and physician-assessments. Howver, finasteride + minoxidil slightly outperformed finasteride + ketoconazole.

Key points:

2% ketoconazole works well as a combination therapy with finasteride.

Pilot Study of 15 Patients Receiving a New Treatment Regimen for Androgenic Alopecia: The Effects of Atopy on AGA

Full text: A.W. Rafi et al., 2011

• Who: 15 AGA-subjects with either atopic dermatitis or seborrheic dermatitis
• What: 2% ketoconazole shampoo. 8 subjects used NuH Hair + finasteride + minoxidil + ketoconazole, 5 using only NuH Hair, 1 using NuH Hair + finasteride + ketoconazole, 1 using NuH Hair + ketoconazole (a subject with seborrheic dermatitis)
• How long: ketoconazole usage 2-3 times a week for 9 months
• Measurements: Average time for hair regrowth, photo and investigator assessments
• Results:
  • Average time for hair regrowth
    • 30 days with NuH Hair + finasteride + minoxidil + ketoconazole
    • 30 days with NuH Hair + finasteride + ketoconazole
    • 60 days with NuH Hair + ketoconazole
    • 90 days with NuH Hair alone

Key points:

Ketoconazole works well as a combination therapy with finasteride and minoxidil, and it can also improve AGA even in men with atopic and/or seborrheic dermatitis.

Key points summary of clinical trials

• By itself and as a combination therapy, 2% ketoconazole improves AGA and TE by:
  • Increasing anagen (growth) hairs
  • Increasing hair shaft diameter
  • Increasing hair density
• Hair improvements from 2% ketoconazole seem to sustain, not wane (at least over 21 months of use)
• 2% ketoconazole increases hair density; 1% ketoconazole doesn’t

Very broadly speaking, ketoconazole alone might be a little bit less effective as minoxidil alone, but it also seems to be a better bet in some respects: more people respond to it, its effects don’t wane over 21 months, and it targets AGA from multiple angles.

Applying Ketoconazole

If you want to get the most out of ketoconazole, here are some tips to maximize your chances of hair regrowth and use ketoconazole in the most effective way:

Opt for 2% prescription, not 1% over-the-counter

There is evidence that prescription strength 2% ketoconazole is (much) more effective than 1 % ketoconazole.

In this study, 2% ketoconazole shampoo increased hair density by 18% while in this study, 1% ketoconazole shampoo didn’t change hair density at all. Both times, ketoconazole was applied around 3 times a week for 6 months.

Also, in this study, 1% ket and 2% ket were compared with their effect on seborrheic dermatitis, and the results were so that “[ketoconazole] 2% had superior efficacy compared to [ketozonaole] 1% in the treatment of severe dandruff and scalp seborrheic dermatitis.”

So get the 2% ketoconazole, not the 1%.

[Hairnotic 8]

@piotr1281

Dzięki za te badania. Szukałem tego kiedyś i nie mogłem znaleźć. Myślę, że obok minoxa i fina jest to obowiązkowa pozycja w walce z łysieniem androgenowym. Ja stosuję 3 razy w tygodniu i nie mam po tym żadnych problemów ze skórą głowy. W pozostałe dni stosuję najdelikatniejszy szampon jaki się da. Myję włosy codziennie.