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health:dermatology [2025/01/15 09:37] – [High Intensity Focused Ultrasound HIFU] marcoshealth:dermatology [2025/01/19 18:45] (current) – marcos
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 ====== Dermatology ====== ====== Dermatology ======
  
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 There are sites that have sprung up that say DIY laundry detergent creates a buildup of dirt that you may not notice right away.  They show picture examples of how dirty the water looks when they use regular laundry detergent on supposedly clean DIY laundry.  For example, sheets that have been in service and washed in DIY laundry detergent repeatedly for a year.  In this example, the sheets are first washed in the DIY laundry detergent, and then washed with regular store-bought laundry detergent like Tide brand.  During the wash, the water looks dirty even though the sheets should be clean.  I think these sites overlook the fact that they are using shaved bar soap as one of the ingredients, that may not rinse off quickly, and requires and extra rinse cycle.  That they fail to think of this idea makes me suspicious of their motives: maybe these sites are backed by the manufacturers of laundry detergent.  Tide costs a lot more per load than DIY.  As mentioned above, my DIY is not 100% DIY, since I use plain washing soda with a little bit of store bought laundry detergent.  I believe only the bar soap shavings would be hard to rinse off, not the washing soda.  Another reason for a build-up occurring on laundry, is that you are using too much soap, regardless of the type.  To test if this might be the case, after washing your laundry as you normally do, run the washer again without adding any soap, and halting the wash before the first rinse to see if the water looks murky.  On the other hand, maybe the buildup is actually from dirt that cannot be cleaned by the DIY laundry detergent.  Keep in mind, there is no such thing as living without dirt or bacteria, so if it looks clean, that's good enough.  You can still wash with regular washing detergent once in a while, and enjoy the benefit of using less chemicals most of the time. There are sites that have sprung up that say DIY laundry detergent creates a buildup of dirt that you may not notice right away.  They show picture examples of how dirty the water looks when they use regular laundry detergent on supposedly clean DIY laundry.  For example, sheets that have been in service and washed in DIY laundry detergent repeatedly for a year.  In this example, the sheets are first washed in the DIY laundry detergent, and then washed with regular store-bought laundry detergent like Tide brand.  During the wash, the water looks dirty even though the sheets should be clean.  I think these sites overlook the fact that they are using shaved bar soap as one of the ingredients, that may not rinse off quickly, and requires and extra rinse cycle.  That they fail to think of this idea makes me suspicious of their motives: maybe these sites are backed by the manufacturers of laundry detergent.  Tide costs a lot more per load than DIY.  As mentioned above, my DIY is not 100% DIY, since I use plain washing soda with a little bit of store bought laundry detergent.  I believe only the bar soap shavings would be hard to rinse off, not the washing soda.  Another reason for a build-up occurring on laundry, is that you are using too much soap, regardless of the type.  To test if this might be the case, after washing your laundry as you normally do, run the washer again without adding any soap, and halting the wash before the first rinse to see if the water looks murky.  On the other hand, maybe the buildup is actually from dirt that cannot be cleaned by the DIY laundry detergent.  Keep in mind, there is no such thing as living without dirt or bacteria, so if it looks clean, that's good enough.  You can still wash with regular washing detergent once in a while, and enjoy the benefit of using less chemicals most of the time.
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-====== Non-Invasive Facial Cosmetics and Body Contouring ====== 
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-===== High Intensity Focused Ultrasound HIFU ==== 
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-<WRAP center round box 95%> 
-[[https://doi.org/10.1097/dss.0000000000002016 |Efficacy and Safety of High-Intensity Focused Ultrasound for Noninvasive Abdominal Subcutaneous Fat Reduction]], Hong et al 2020. 
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-{{:health:screenshot_20250114_205916.jpg|Experiment Settings}} 
-</WRAP> 
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-Skin thickness on the abdomen is slightly under [[https://doi.org/10.1371/journal.pone.0086637 |2mm for adults]], so even a facial mini hifu with the following specs will burn subcutaneous fat. 
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-"Covers an area of 4cm2 at depths of between 3mm to 4.5mm. 
-L1: 3mm - L2: 3.4mm - LV3: 3.8mm - LV4: 4.2mm - LV5: 4.5mm"  [[https://www.youtube.com/watch?v=uKcEOwbi1Jc |Tutorials on YouTube]]. 
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-The following my empirical opinions: 
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-Keep the hifu in one spot for 10 seconds and move 1cm at a time to cover desired area.  Use once a month to allow full recovery.  It will be uncomfortable the first couple days.  You can use a compression garment or back support belt to relieve discomfort and to heal flat.  Schedule in the  morning and have a single meal that day at 3pm to reduce fat reabsorption.  I didn't use any gel and it still works applying approx 500 to 600 grams of pressure.  Results took 6 months to reduce 2.5cm depth of fat to 1cm. 
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-==== Aloe Vera Gel instead of Ultrasound Gel ==== 
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-<WRAP center round box 95%> 
-Ultrasound gel is used as a coupling medium in all ultrasound procedures to replace air between the transducer and the patient’s skin, as ultrasound waves have trouble in traveling through air.\\ 
-...\\ 
-At the borderline between media of distinctive acoustic impedances, some of the wave energy is transmitted and some is reflected. The larger the gap in acoustic impedance between the two media, the more prominent will be the reflection, and the less there will be the transmission. For diagnostic ultrasound (US), ultrasound gel having acoustic impedance comparable to soft tissue (1.6 Mrayl) is necessary for the complete transmission of ultrasound waves.\\ 
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-The acoustic impedance of the selected formulation (S1) was 1.45 Mrayl and the acoustic impedance of commercial gel (CG) was 1.5 Mrayl. The results showed that the acoustic impedance of both was very close and similar to the impedance of soft tissues (1.6 Mrayl). The intensity reflection coefficient tells us that 0.6% of sound waves reflect at the boundary between gel and human skin, while 99.4% transmit through the skin, and it is opposite without ultrasound gel.  [[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8774352/ |Preparation and Evaluation of Polymer-Based Ultrasound Gel and Its Application in Ultrasonography, Afzal et al 2022]] 
-</WRAP> 
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-Images recommended as acceptable by raters was 91.7% for Aloe vera lotion and 81.7% for commercial gel.  
- [[https://doi.org/10.1177/87564793221120430 |Aloe vera Lotion Used as a Potential Alternative Couplant for Sonography, in a Low-Resource Health Care Facility, Paulinu et al 2022]] 
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-Aloe vera- based gel is a feasible alternative to commercially available ultrasound gel on diagnostic ultrasound imaging  [[https://research.lpubatangas.edu.ph/wp-content/uploads/2022/06/1-APJAHS-2020-010.pdf |Aloe vera (L.) Burm.f.-based gel as an 
-alternative to commercially available ultrasound gel on diagnostic ultrasound imaging: a phantom study (pdf) Cabataña et al 2020]] 
  
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health/dermatology.txt · Last modified: 2025/01/19 18:45 by marcos

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