Skin chemistry & skin types

Skin chemistry

Chemistry of our skin: An updated updated overview (May 2018)

Chemistry of our skin: An updated overview (March 2012)

Chemistry of our skin: An overview

Desquamation

Natural moisturizing factor (NMF)

Stratum corneum lipids

Trans-epidermal water loss (updated)

Sebum (updated)

Melanin (updated) – subscribers’ exclusive

pH and the acid mantle (updated)

pH and our skin

pH and skin care products (updated)

pH and bath products (updated)

Comedogenicity and acnegenicity.

Comedogenicity (updated for 2012, more in depth)

Aquaglyceroporins or AQP-3 (updated)

How do penetration enhancers work?

Can oils penetrate our skin?

Can polyphenols found in oils penetrate our skin?

Can phytosterols found in oils penetreate our skin?

Is there a reason to use expensive oils in our products?

What’s the difference between moisturizing and hydrating? (updated)

SUNSCREEN! 

Please don’t make your own sunscreen (updated)

Loads about the science of sunscreen (updated)

The Science of SPF (Handmade magazine article)

Skin types

Skin types: An overview (updated)

Dry skin type (updated)

Oily skin type (updated)

Resistant or sensitive skin, including acne prone

Rosacea prone skin

Stinging skin

Allergic skin

Pigmented skin type (updated) – information on melanin production

Wrinkled skin type (updated) – information on photo-aging

Working with your skin type (examples)

Formulating for dry skin

What is dry skin? (updated)

Impaired skin barrier repair mechanisms (updated)

Lower hydration levels (updated)

What ingredients could we use for dry skin? (Part one)

What ingredients could we use for dry skin? (Part two)