Dermalign is the only bruise treatment that does both jobs. It fades the marks you already have, and it strengthens the skin so you get fewer new ones.
Vitamin K1 works on the blood that has leaked under the skin, which is what the purple actually is. Arnica helps clear it faster. Vitamin C evens out the tone left behind once the mark fades.
That covers what is already there. The rest covers what caused it.
Retinol is the most studied ingredient in skin care for thin, sun damaged skin. It works below the surface, where the thinning happened. Glycolic acid clears the dead surface layer so the retinol can reach it. Ceramides and niacinamide rebuild the barrier, so the skin holds moisture and takes everyday contact better.
What you are getting is a skin care formula built on clinically studied ingredients, made for skin that bruises easily. Not a spot treatment you dab on and wait.