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People in Jeddah know about Vitamin D and its sources but are unclear on how much they need daily, and while many women take supplements, attitudes towards increasing Vitamin D levels vary.

Hyperpigmentation is common in pregnancy and may not fully fade after birth; melasma, also frequent, can persist but has limited treatment options during pregnancy.

Hair follicles may soon be used more for targeted and systemic drug delivery.

The document says biodegradable cosmetics and packaging are better for the environment and user experience.

Herbal cosmetics are becoming more popular because they are safer, have fewer side effects, and offer health benefits.

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

Particle properties affect drug retention and release in minoxidil foams, with lipid nanoparticles having higher loading capacity.

Facial aging is caused by natural processes and external factors, and can be managed with preventative measures and a variety of treatments tailored to individual needs.

Liposomes improve the delivery and effectiveness of cosmetic ingredients but face challenges like cost and stability.

Twisting hair weakens it, but strength can be recovered at low twist levels.

Cosmeceuticals are special products that improve skin and hair health and have benefits like treating acne and wrinkles, protecting from the sun, and helping with dandruff and hair growth.

New treatments and diagnostic methods for various animal skin conditions showed promising results.

A new method helps understand hair shine and various products improve hair care.

Fullerenes show potential in skin care but need more safety research.

Natural skincare products may help reduce sun damage and support the skin's daily cycle.

Quercetin-loaded nanoparticles protect human hair from UV-B damage.

Nanomaterials can improve hair care products and treatments, including hair loss and alopecia, by enhancing stability and safety, and allowing controlled release of compounds, but their safety in cosmetics needs more understanding.

Caffeine is beneficial for skin and hair treatments but needs better delivery methods to penetrate deeper skin layers.

Hair follicle size and distribution vary significantly across different body sites.

Zinc pyrithione dissolves quickly on the skin and in hair follicles, especially in smaller particles.

Silibinin-loaded micelles significantly protect hair from UV-B damage.

Herbal cosmetics with oils like olive, coconut, and almond are popular for their skin and hair benefits with few side effects.

Tea, especially green tea, shows promise in cosmetics for skin and hair benefits but more research is needed for effective use.

Microspheres about 1.5 micrometers in size can best penetrate hair follicles, potentially reaching important stem cells.

Caffeine in cosmetics may reduce cellulite, protect skin, and stimulate hair growth, but more research is needed on its use and effects.

Excipients greatly affect how well curcumin nanocrystals penetrate the skin and target hair follicles.

Nanotechnology improves cosmetics' effectiveness and safety.

Recombinant human epidermal growth factor is versatile, effective, and safe for long-term skin and mucosal treatments.

Non-ionic silicone emulsion best protects hair color from sunlight.

Some cosmetics and dermatological drugs can cause allergic reactions and side effects, like skin irritation and systemic issues.