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    GlossaryPolydispersity Index

    measure of molecular size distribution in a polymer sample

    The Polydispersity Index (PDI) is a measure of the distribution of molecular mass in a given polymer sample. It indicates how uniform or varied the sizes of the molecules are within the sample. A PDI value close to 1 suggests a uniform molecular size, while higher values indicate a broader range of molecular sizes. This term is particularly important in fields like materials science and biochemistry, where the consistency of molecular size can impact the properties and behavior of materials or biological molecules.

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      community Does This Invalidate PP405 Completely?

      in Research/Science 5 months ago
      PP405's effectiveness in increasing hair density is questioned due to a small sample size, despite investment from Google Ventures. Users express skepticism and suggest waiting for more conclusive results.

      community Are we underestimating systemic absorption with homemade/generic Topical Fin? (HPCH vs. PG/Ethanol formulations)

      in Research/Science  5 upvotes 5 months ago
      Topical finasteride may have higher systemic absorption and lower efficacy when using a Propylene Glycol/Ethanol formulation compared to the hydroxypropyl chitosan (HPCH) formulation. The safety profile of topical finasteride relies heavily on the HPCH formulation, and using standard solutions might lead to different pharmacokinetics.

      community PP405 (Everychem 3HP) Users - Assemble and share your story!

      in Chat  19 upvotes 2 months ago
      Users discussed the effectiveness of Everychem's solution, similar to PP405, with some reporting improved hair thickness and new growth. Concerns were raised about safety and the legitimacy of the product, with some users advising against purchasing research chemicals.

      community Duality of (diffuse thinning) man

      in Chat  67 upvotes 1 year ago
      The user has been using finasteride for over two years with mixed results and is considering starting dutasteride and oral minoxidil, though both are hard to obtain. They are also contemplating a hair transplant in the future due to diffuse thinning.

      community Diluting DIY topical finasteride

      in Finasteride/Dutasteride  2 upvotes 10 months ago
      A user is discussing making a DIY topical finasteride solution using ingredients like water, alcohol, propylene glycol, ethanol, and glycerin, and is concerned about the stability of the mixture. Other users suggest that the solution will work and discuss the importance of propylene glycol for drug dissolution and factors like temperature and light affecting finasteride stability.

      community Having Ru58841 mailed to my house

      in Research/Science  1 upvotes 5 months ago
      RU58841 can be ordered as a powder and compounded at home, but it should be stored at room temperature to avoid crystallization. Pyraulatmide may follow a similar principle.

      community Homemade pyri solution- problems

      in Treatment  1 upvotes 2 years ago
      A user mixed a pyrilutamide solution and noticed undissolved powder at the bottom, questioning if this is normal and how long to wait before applying it. They wished others good luck with their treatments.

      community RU55841 premixed solution vs powder

      in Treatment  4 upvotes 5 years ago
      RU58841 treatment for hair loss, comparing premixed solutions to powder form. Users prefer powder for cost-effectiveness and customization.

      community Selling a premixed KY19382 solution

      in Research/Science  7 upvotes 4 years ago
      The conversation discusses the sale of a premixed KY19382 solution for research purposes, highlighting previous unsuccessful group buys and the formulation process. Prices and purchasing options for KY19382 solutions and powder are provided.

      community Diy dutesteride please help MCT oil or PG?

      in Finasteride/Dutasteride  1 upvotes 8 months ago
      A user is making their own dutasteride solution using MCT oil but is concerned about its effectiveness and bioavailability. They are considering using propylene glycol or adding ethanol for better results, while others suggest the current dosage might be excessive.

      community any news about DUPA (Diffuse unpatterned alopecia)?

      in Research/Science  8 upvotes 3 years ago
      The conversation discusses diffuse unpatterned alopecia (DUPA) and its possible causes, including sensitivity to DHT, not being androgenic alopecia, being diffuse alopecia areata, or hormonal issues. Treatments mentioned include topical melatonin, Clobetasol Propionate for alopecia areata, and the lack of results from using finasteride, dutasteride, and minoxidil.

      community PP405 (Everychem 3HP) users - assemble and share your updates!!

      in Chat  44 upvotes 3 months ago
      Users discussed experiences with Everychem's solution similar to PP405 for hair loss, noting some positive results like increased hair thickness and new growth. There was skepticism about the product's legitimacy and safety, with some users reporting early signs of effectiveness and others expressing concerns about the lack of evidence and safety profiles.

      community Trichosol, polyethylene glycol, and DMSO

      in Minoxidil  3 upvotes 2 years ago
      The user experiences irritation from alcohols in minoxidil and is considering alternatives like trichosol mixed with polyethylene glycol or DMSO. They seek advice on the best nonirritating option.

      community Topical fin formulation question

      in Finasteride  91 upvotes 1 year ago
      A user is making a homemade topical finasteride solution by dissolving crushed finasteride tablets in ethanol and PG. They are unsure if the final solution maintains the intended concentration after filtering and are considering adding more ethanol to ensure accuracy.

      community Pyrilutamide solution question

      in Research/Science  8 upvotes 3 years ago
      The conversation is about the stability of pyrilutamide in different solutions. The user is asking if a 70/30 ethanol/pg solution with 4% water will degrade pyrilutamide.

      community Don't use PP405 from everychem. it is likely fake.

      in Research/Science  66 upvotes 1 year ago
      PP405 from Everychem is likely fake and potentially harmful, with concerns about its stability and the risk of using the wrong MPC inhibitor, which could damage hair follicles. The real PP405 was studied under strict conditions, and DIY attempts are discouraged due to unknown formulation and quality control.

      community Any chemists want to manufacture PP405 / JXL069? (Steps inside)

      in Research/Science  89 upvotes 8 months ago
      The conversation discusses the synthesis and potential use of JXL069 and PP405 for hair loss treatment, with skepticism about their effectiveness and concerns about safety. Users mention that JXL069 has shown no results in hair growth, and there is confusion about its identity and effectiveness compared to PP405.

      community Any other diffuse thinners hate swimming?

      in Chat  78 upvotes 4 years ago
      People who experience diffuse thinning of their hair and how they cope with going swimming. People discussed wearing a swimming cap, making jokes out of it and accepting that it's genetics.

      community Combining all your topicals into one

      in Treatment  3 upvotes 2 years ago
      The user is using a hair loss treatment regimen that includes applying various topical solutions and taking oral medication. They are mixing their topical treatments to save time but are concerned about the effectiveness of the treatments when combined and stored.

      community Does anyone know the chemical formula for pelage pp405?

      in Research/Science  14 upvotes 1 year ago
      The conversation discusses the lack of public information on the chemical structure of PP405, a hair loss treatment, and the challenges of synthesizing it without a patent. It also explores a patent related to hydrogen-based topical formulations for reducing oxidative stress and inflammation.
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