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Microneedles improve drug delivery in various body parts, are safe and painless, and show promise in cosmetology, vaccination, insulin delivery, and other medical applications.

Older age and related diseases increase COVID-19 risk, but anti-aging treatments might help.

Asia has made significant progress in tissue engineering and regenerative medicine, but wider clinical use requires more development.

The hydrogel with a 1:3 ratio of hydroxyethyl cellulose to hyaluronic acid is effective for delivering drugs through the skin to treat acne.

Liposomes could improve how skin care products work but are costly and not very stable.

COVID-19 can cause skin issues like rashes and "COVID toes," and people with skin conditions should adjust their treatments if they get the virus.

Layer-by-Layer self-assembly is promising for biomedical uses like tissue engineering and cell therapy, but challenges remain in material safety and process optimization.

Stress hormone corticosterone blocks a growth factor to slow down hair stem cell activity and hair growth.

Women with PCOS often have skin problems like excessive hair, acne, hair loss, and dark patches, which can be treated with hormonal and non-hormonal therapies.

5α-reductase inhibitors can cause sexual problems, higher risk of aggressive prostate cancer, and depression.

Plant cell culture is a promising method for creating sustainable and high-quality cosmetic ingredients.

Different scaffold patterns improve wound healing and immune response in mouse skin, with aligned patterns being particularly effective.

Sub3 is essential for fungus adherence but not for skin invasion.

Light can turn on hair growth cells through a nerve path starting in the eyes.

Increased skin pigmentation in mice reduces bioluminescent signal accuracy.

Nitric oxide gel helps heal skin burns faster by improving skin growth, hair regrowth, and blood vessel formation.

Adult mice can grow new hair from skin wounds.

Hair can regrow after certain stem cells are lost because other stem cells can take over their role.

Two-photon microscopy helps observe hair follicle stem cell behaviors in mice.

The document concludes that while there are promising methods to control CRISPR/Cas9 gene editing, more research is needed to overcome challenges related to safety and effectiveness for clinical use.

Nanoparticulate systems improve drug delivery by controlling release, protecting drugs, changing absorption and distribution, and concentrating drugs in targeted areas.

Phosphatidic acid may help hair grow by affecting cell growth pathways.

Microneedle arrays with nanotechnology show promise for painless drug delivery through the skin but need more research on safety and effectiveness.

Women with polycystic ovary syndrome tend to have a longer distance between the clitoris and anus.

A new wearable LED device helps heal chronic infected wounds at home.

Drug repurposing is a cost-effective way to find new uses for existing drugs, speeding up treatment development.

Long-term use of a certain medication can worsen erectile function in aged rats by damaging penile muscle cells.

Applying calreticulin can speed up wound healing in diabetics.

STAT5 activation is crucial for starting the hair growth phase.

Stress in mice delays hair growth and treatments blocking substance P can partly reverse this effect.