Redness Reform Sulfur Cleanser (2.5% Colloidal Sulfur) — Reddit Reviews
by Prequel
Updated October 10, 2026
Sulfur and azelaic acid calm rosacea-redness and pustules; can dry you out.
What the community says
Studies found sulfur lotion reduced acne spots, and Redditors echo that with fewer pustules and calmer redness. This cleanser suits rosacea-prone or acne-prone skin that can handle sulfur; dry, sensitive faces keep calling it drying.
What this means for you
What people love
Watch out for
Product details
Use caution
Skin Type
Product Traits
Key Ingredients
Where to buy
What the science says vs. what Reddit says
Acne
Not proven yet
Few or mixed studies. This claim isn't established.
Sulfur: 1 study tested it on its own. See all 5 studies
On Reddit: Nighttime use avoids sulfur’s smell all day, while users say it keeps pustules at bay. 9 mentions
Rosacea
Not proven yet
Few or mixed studies. This claim isn't established.
Sulfur: 1 study tested it on its own. See all 4 studies
On Reddit: Pustules stay at bay with this sulfur wash; one user uses it every other night. 15 mentions
Research context, not treatment advice. Studies are about the ingredient, not necessarily this exact product.
Real Reddit threads — 58 mentions across 30 threads
Prequel Redness Reform Sulfur Cleanser (2.5% Colloidal Sulfur) on Reddit, in one place — 30 threads from r/SkincareAddiction, r/Rosacea and 3 more, summarized.
“Prequel just came out with a sulfur cleanser that is amazing”
Mentioned
“If you are looking for acne control and trying not to burn your face off, try these!”
Mentioned
“Sulfur is the unsung hero of skincare.”
Mentioned
“I’ve been doing sulfur cleanser and 15% azelaic acid for like four months now with no progress 😭”
Cautionary
“sulfur cleanser”
Cautionary
“with no progress”
Cautionary
“Prequel’s new sulfur cleanser is also helping my skin SO MUCH.”
Positive
“Not sponcon I’m just a regular person.”
Positive
“It’s gentle!”
Positive
“just picked up the sulfur cleanser.”
Cautionary
“I've tried the sulfur cleasner and liked it initially but then realized I was giving myself a reaction because I'm allergic to sulfa products.”
Cautionary
“I thought about ordering the sulfur cleanser but the prescription cream I’m about to start has azelaic acid in it”
Cautionary
“The sulfur wash from Prequel is so gentle.”
Positive
“I’ve had a similar experience with other ones being too harsh but I took the chance and my texture is clearing up”
Positive
“The sulfur wash from Prequel”
Positive
“The prequel SA cleanser can be a more gentle way to keep salicylic acid in your routine.”
Mentioned
“The prequel cleanser uses a time release encapsulated salicylic acid”
Mentioned
“more gentle and more effective than unencapsulated SA”
Mentioned
