"Before or after the conditioner?" is the question that comes up most about Sancler's Leave-In. Short answer: after everything else, and it doesn't rinse out. The longer answer explains why that order matters — and how much product is too much.
What a leave-in actually is
A leave-in doesn't replace the Conditioner or the Mascarilla — it's the step that stays on. While the Shampoo cleans and the Conditioner rinses out within minutes, the Leave-In goes on already-washed hair and stays there, working through the rest of the day. Its job isn't to clean or deep-seal — it's to hold onto the hydration the earlier steps already left behind.
When to apply it
The window is right after washing, on damp hair — not dripping, not dry. Applying it to soaking-wet hair dilutes the product before it can work; applying it to already-dry hair leaves it sitting on top instead of absorbed. That middle point — damp, already towel-squeezed — is where Sancler's Leave-In delivers what it's built for.
The Leave-In is used day to day, not only on wash day — that's what sets it apart from the rest of the routine.
How much to use
This is the most common mistake: using the same amount as conditioner. The Leave-In stays on, so excess doesn't rinse away — it builds up, weighs hair down, and trades shine for heaviness. The right amount depends on length, but the rule holds: less than feels necessary, worked from mid-lengths to ends, never near the root.
The ingredients behind the step
Sancler's Leave-In is formulated with avocado, aloe, and natural essences — the same avocado-and-aloe pairing found in the Mascarilla, but at a concentration built to stay on all day rather than work for ten minutes under water. Like the rest of the line, it's made without sulfates, parabens, added salt, or dyes.
Why it gets skipped so often
Of the six products in the line, the Leave-In is the one most likely to fall out of a routine — not because it underperforms, but because it doesn't have a fixed moment like wash day does. Without that anchor, it becomes optional. The simplest fix: keep it by the mirror, not in the shower, so applying it happens on the way out the door, not inside the wash-day ritual.
What it pairs with
The Leave-In doesn't compete with the Conditioner or the Mascarilla — it works after either one, any day. On a normal wash day: Shampoo, Conditioner, and Leave-In on the way out of the shower. On the weekly Mascarilla day, the order stays the same — the Mascarilla takes the Conditioner's spot that day, and the Leave-In still follows, same as always.
A sign the amount is right
No need to guess. If hair feels soft and manageable a couple of hours after applying it, the amount was calculated correctly. If it feels heavy or looks freshly-applied hours later, the fix next time is less product, not a different one.
How to order it
All six products in the Sancler line ship flat at $10 across New York City, arriving in two to five business days, or can be picked up directly at the Bronx location. The code SANCLER10 takes 10% off orders of $50 or more, valid through November 30, 2026 — enough to add the Leave-In to a Shampoo-and-Conditioner order.
Not sure how much to apply for your hair type? Message WhatsApp and the team will walk through the right amount.