What is shea butter in skincare?
Shea butter is the fat extracted from the nuts of the African shea tree, Vitellaria paradoxa. It is solid at room temperature and melts at body heat, which is why it feels rich going on and sinks in once warmed.
Its value lies in the unsaponifiable fraction – an unusually high 5 to 10% of triterpenes, tocopherols and phytosterols, far more than most plant fats. Those compounds give it anti-inflammatory and barrier-repair activity beyond simple occlusion.
What skin concerns does shea butter treat?
It is a first-line choice for very dry, rough or cracked skin, and for eczema, psoriasis and winter-damaged hands and lips. It reduces water loss substantially while calming inflammation at the same time.
It also soothes after sun exposure, softens scars and stretch marks, and protects skin exposed to cold and wind. Unrefined shea retains more actives but has a nutty smell; refined shea is neutral but less potent.
What ingredients are best paired with shea butter?
Use it as the final occlusive layer over humectants such as glycerin and hyaluronic acid, and alongside ceramides for a complete barrier routine.
It is ideal for buffering the dryness of retinoids and acids on body skin. It sits mid-range on the comedogenic scale, so keep it to the body and dry patches if your face is oily or breakout-prone. Those with tree nut allergies should patch test. Take our Skin Quiz.
What are age spots?
Age spots – known clinically as solar lentigines, and sometimes as liver spots – are flat, well-defined brown or tan patches that appear on skin with the most cumulative sun exposure: the face, backs of the hands, forearms, shoulders and upper chest.
Despite the name, they are not caused by age itself. They are a record of ultraviolet exposure, which is why they are common from the forties onward and why they cluster on areas that rarely get sunscreen.
What causes age spots?
Long-term UV exposure drives melanocytes to over-produce melanin in concentrated spots, and the surrounding keratinocytes stop clearing that pigment efficiently as skin ages.
Fair skin, a history of sunburns, tanning beds and outdoor work all raise the risk. Any new spot that changes shape, colour or size, bleeds or has an irregular border should be checked by a doctor rather than treated cosmetically.
What ingredients are best for age spots?
Topical treatment works but needs patience – expect three to six months. Retinoids speed turnover so pigmented cells shed faster, vitamin C and niacinamide brighten and protect, and alpha arbutin, kojic acid, azelaic acid and liquorice root inhibit new pigment.
Glycolic or lactic acid helps lift existing pigment from the surface. Daily broad-spectrum SPF, including on hands and chest, is what prevents new spots forming. Take our Skin Quiz.
