Undefined Inc R&R Night Serum w/Retinal
- Ships in 4–8 business days
- 30-day returns
- Vetted clean brands
- Secure checkout
- 0.1 percent retinal, no prescription
- Bakuchiol and tamanu
- Serum-in-oil texture
- For face, body, and scalp
What it is
What it does
Who it's for
How to use
How much: A few drops for the face and neck.
2. Start 2 to 3 nights a week and build up as skin adjusts.
3. Follow with moisturizer if you like, and use SPF in the morning.
Where it fits: Last treatment step at night, after cleansing.
Inside the formula
Retinal 0.1%
A fast-acting retinoid that boosts collagen and cell turnover.
Bakuchiol
A plant-based alternative to retinol that helps skin look smoother and more refined
Tamanu Oil
A regenerative oil from the tamanu nut.
Blue Tansy
An anti-inflammatory flower oil that gives the serum its blue color.
Squalane
A lightweight oil that keeps skin hydrated during sun exposure.
Full ingredient list
Why we stock it
We stock this because retinal at 0.1 percent is serious strength with training wheels. The oil base and bakuchiol pairing make it the most approachable way to start a retinoid.
The Nexus standard
Vetted before it lists
Every brand on our shelf is screened before it can sell here. Fewer than you'd think make it through.
Direct from the maker
We work directly with independent brands and skip the retail markup, so you pay less for the same products.
30-day returns
Changed your mind? Returns are easy within 30 days on unopened products. Secure checkout, always.
About the brand
Undefined Inc
Clean beauty for every body
We stock Undefined because they make plant-based skincare that performs at prices most people can actually afford, and the inclusivity is real, not marketing.
