Good for all forms of redness (capillaries, general redness, flushing/blushing). No matter the underlying cause lasers work consistently well on blood vessels, though may need a course of treatments to start then maintenance treatments over the years as Rosacea can’t be cured but needs to be managed.
Lasers use heat conveyed by laser light to destroy these abnormal blood vessels so can look and feel hot/red after and may get some diffuse swelling in the days following as the body responds to the heat. A course of LED (Healite) treatments have an anti inflammatory action and are excellent in conjunction with a course of vascular laser to settle redness.
Gentle skin care as skin is sensitive, use mild cleansers and moisturisers such as Cetaphil/QV/La Roche Posay products. Active products again may need trial and error to see what suits. Vitamin A can be great but is highly likely to cause irritation so dilution with bland moisturisers to start is useful. Vitamin A can be bought OTC or on prescription (Retrieve/ Differin). Go slowly and use low amounts, back off and dilute if redness, peeling skin occurs. Vitamin A has a long documented history of being effective in decreasing pores , pigment and pimples as well as improving fine lines and wrinkles. Anti-inflammatory topicals such as Niacinamide (Vit B3)are useful.
Note - Vitamin C is a very acidic active product and its low pH may cause irritation so might not be as useful in Rosacea, also peels and microdermabrasions may be too harsh for sensitive skin common in this condition.