What is collagen in skincare?
Collagen is the structural protein that makes up roughly three-quarters of the skin’s dry weight. It forms the scaffolding in the dermis that keeps skin firm, thick and resilient, and production begins declining from the mid-twenties.
In products it appears either as hydrolysed collagen – broken into smaller peptides – or as an oral supplement. Whole collagen molecules are far too large to cross the skin barrier, so topical collagen works as a humectant and film-former rather than by replacing what you have lost.
What skin concerns does collagen treat?
Applied topically, hydrolysed collagen hydrates the surface and temporarily plumps fine lines, improving smoothness and how skin reflects light.
Taken orally the evidence is stronger: a systematic review and meta-analysis of randomised trials found hydrolysed collagen supplementation improved skin hydration and elasticity, with most studies running eight to twelve weeks.
What ingredients are best paired with collagen?
Vitamin C is the essential partner, because it is a required cofactor for the enzymes that cross-link collagen – without it, your body cannot build collagen regardless of intake.
Retinoids and peptides stimulate fibroblasts to produce more of their own, which does more for firmness than any collagen you apply. Hyaluronic acid, ceramides and daily SPF protect what is already there. Take our Skin Quiz.
What is rosacea?
Rosacea is a chronic inflammatory skin condition that affects the central face – cheeks, nose, chin and forehead. It presents as persistent redness, visible broken capillaries, flushing that comes and goes, and in some subtypes acne-like papules and pustules.
Unlike acne, rosacea involves no comedones. It is driven by a combination of vascular hyper-reactivity, neurogenic inflammation and an overactive innate immune response, often with an impaired skin barrier alongside.
What causes rosacea?
There is no single cause. Genetic predisposition, an exaggerated immune response involving cathelicidin, overgrowth of Demodex mites, and dysfunction of the facial blood vessels all appear to contribute.
Flares are triggered by heat, sun exposure, alcohol, spicy food, hot drinks, exercise, stress, wind and cold, and by harsh skincare. Identifying and avoiding your own trigger set does as much as any product.
What ingredients are best for rosacea?
Azelaic acid and niacinamide are the standout actives – both reduce redness and inflammation without provoking the barrier. Sulphur, green tea extract, liquorice root and centella asiatica also calm reactive skin.
Build everything else around barrier repair: ceramides, glycerin, squalane and panthenol, with a gentle non-foaming cleanser and a mineral SPF every day. Avoid alcohol-heavy toners, fragrance, menthol, physical scrubs and high-strength acids. Take our Skin Quiz to build a routine your skin will tolerate.
