BIA Wash Off Cleansing Oil

Cleansing oils are an unglamorous category. You're paying for something that spends about ninety seconds on your face and then goes down the drain. Most brands treat the format accordingly, loading up cheap ester oils, a synthetic emulsifier, and a fragrance to make the experience feel premium. The result is a cleanser that efficiently removes makeup and leaves behind nothing — no residue, no benefit, no reason to remember the product existed. Codex's Bia cleansing oil takes a different angle. It treats the ninety seconds you spend massaging oil into your face as an opportunity to deliver lipids your barrier actually needs, and it builds the formula around that idea. The base is a blend of cold-pressed sunflower, evening primrose, borage, plum, and black currant seed oils — all linoleic-acid-rich and all chosen for their barrier-repair credentials rather than their cleansing efficiency. The single emulsifier is plant-derived polyglyceryl-4 oleate, which triggers the milky emulsification when water hits but doesn't wash the lipid layer away as aggressively as petroleum-derived alternatives. The ingredient list is refreshingly short — sixteen ingredients total — and there's no synthetic fragrance, no preservative cocktail, and nothing included for marketing purposes. The use experience reflects the formulation philosophy. You pump two or three presses into dry palms, warm it between your hands, and massage onto dry skin. The oil glides smoothly and dissolves SPF and makeup within thirty seconds of gentle massage — including waterproof mascara, though you should keep your eyes closed during the process. Adding water triggers the emulsification, and the oil turns pale milky white as it lifts off the skin. Rinsing is where the Codex formula diverges from what users of DHC Deep Cleansing Oil or Shu Uemura's signature oils expect. It doesn't rinse completely clean. There's a subtle lipid softness left on the skin afterward, and that's intentional — the formulation is built to leave barrier-supporting oils behind rather than stripping them off. For dry, sensitive, or eczema-prone skin, that residual comfort is exactly what you want. For oily or acne-prone skin, it can feel like an incomplete cleanse, and those users will likely prefer following with a gentle second cleanser. The borage oil dose is the detail worth paying attention to. Borage is one of the richest natural sources of gamma-linolenic acid, the omega-6 fatty acid that's specifically associated with barrier repair in compromised skin. Most cleansing oils don't bother with borage because it's relatively expensive and the brief skin contact during cleansing seems to make it redundant. Codex's argument — and it's a defensible one — is that consistent nightly exposure to barrier-supportive lipids, even briefly, can add up over time. Users with eczema-prone skin who have tried this cleanser often report that their skin feels meaningfully calmer after a few weeks of use, which tracks with what you'd expect from the formulation. Where the cleanser is less impressive is on value. At $36 for 150ml, it's priced at roughly three times what you'd pay for DHC Deep Cleansing Oil and about double what most Western drugstore cleansing oils cost. The formulation justifies some of that premium — the cold-pressed botanical oils and the clean-beauty positioning aren't cheap — but budget-conscious shoppers looking purely for a sensitive-skin cleansing oil will find cheaper alternatives that perform nearly as well. CeraVe's Hydrating Oil Cleanser costs roughly a third as much and has its own solid barrier-support story, though without the botanical provenance or the short ingredient list that Codex prioritizes. The overall verdict: this is a thoughtful, well-formulated cleansing oil that earns its place in dry, sensitive, or compromised-skin routines. It's not the cheapest option, and it's not the fastest-rinsing, but it does something most cleansing oils don't bother doing — treat the cleansing moment as a chance to support the skin barrier rather than just clean it. For users who care about that framing, it's one of the better cleansing oils in the clean-beauty category.

Formula

The Science

The formulation's efficacy rests on the well-understood role of linoleic-acid-rich plant oils in supporting skin barrier function. Sunflower, evening primrose, borage, and black currant seed oils are all high in linoleic acid or gamma-linolenic acid, and peer-reviewed dermatological research has documented that topical linoleic acid application can improve transepidermal water loss measurements and support stratum corneum integrity in compromised skin. Borage seed oil specifically has been studied for its gamma-linolenic acid content in the context of atopic dermatitis, with research exploring both oral and topical applications. While the clinical evidence is more compelling for oral borage oil in eczema-prone populations, the topical application rationale is consistent with the broader literature on fatty acid supplementation of the skin barrier. The cleansing mechanism relies on the oil-based dissolution of sebum, makeup, and SPF residues — a physical process well-understood in cosmetic chemistry. The polyglyceryl-4 oleate emulsifier enables the oil-to-milk transition when water is added, which allows the formulation to rinse away without leaving a heavy greasy residue. The absence of synthetic fragrance, essential oils (aside from a minor cedar component), and aggressive preservatives is the formulation's most important safety feature for sensitive skin. Codex's own clinical testing on the Bia line has reported improvements in barrier function metrics after consistent use, but these results come from in-house consumer studies rather than independent peer-reviewed trials. The gentle-cleansing positioning is well-supported by the ingredient architecture even without proprietary clinical validation.

Dermatologist Perspective

Dermatologists frequently recommend cleansing oils as a first step in the routines of patients with dry, sensitive, or compromised skin — particularly those who rely on sunscreen and mineral makeup that traditional gel cleansers struggle to remove without stripping the barrier. Board-certified dermatologists note that cleansing oils based on linoleic-acid-rich botanical bases are generally well-tolerated by acne-prone patients, despite the persistent myth that all oils cause breakouts. The borage oil and evening primrose oil components of this formulation align with dermatological recommendations for patients with eczema or atopic dermatitis, though dermatologists typically caution that topical fatty acid delivery is a support strategy rather than a primary treatment. For users looking for a fragrance-free, clean-formulation cleansing oil with a short ingredient list and a clear barrier-support rationale, this product is generally considered a reasonable option, though cost-conscious patients are often steered toward drugstore alternatives that deliver similar fundamental benefits.

Guidance

Codex launched the Bia line in 2019 as its dedicated range for dry, sensitive, and eczema-prone skin, and the cleansing oil was reformulated to a 2.0 version in 2024 to improve emulsification and streamline the ingredient list. The Bia name comes from the Celtic word for vitality, fitting the brand's clean-beauty and sustainable-sourcing positioning.

About Codex Labs Emerging Brand (2–5 years)

Codex Labs (formerly Codex Beauty Labs) was founded in 2018 by Stanford-trained engineer Barbara Paldus with the mission of bringing scientific rigor to clean beauty. The brand conducts in-house clinical and microbiome testing, though independent peer-reviewed validation of its proprietary botanical complexes is still limited.

Brand founded: 2018 · Product launched: 2019

Myth vs. Reality

Myth

All cleansing oils break out acne-prone skin.

Reality

The oils in this specific formula are predominantly linoleic-acid-rich (sunflower, evening primrose, borage), which is the fatty acid profile associated with lower comedogenic risk. Acne-prone skin often has linoleic acid deficient sebum, and linoleic-rich cleansing oils can actually be tolerated well. That said, individual responses vary — patch test before committing.

Myth

A cleansing oil should rinse completely clean with no residue.

Reality

Plant-emulsifier cleansing oils leave a subtle lipid residue that's actually beneficial for dry or compromised skin. If you want a truly squeaky-clean finish, you're looking for a different cleanser format — gel, foam, or traditional surfactant cleanser. This oil is designed to leave barrier-supporting lipids behind.

FAQ

Common Praise

"Gentle on sensitive skin"

"Effectively removes SPF and makeup"

"No stripping or tight feeling"

"Pleasant natural scent"

"Short clean ingredient list"

Common Complaints

"Expensive compared to Japanese cleansing oils"

"Doesn't emulsify as fully as synthetic-emulsifier cleansers"

"Can leave slight residue on very oily skin"

"Cedar oil scent too earthy for some users"

Notable Endorsements

Credo Beauty stockistFeatured in Well+Good cleansing oil roundups

Appears In

best clean beauty cleansing oil best cleansing oil for sensitive skin best cleansing oil for eczema best vegan cleansing oil best barrier repair cleanser

Related Conditions

dryness sensitivity compromised skin barrier eczema

Related Ingredients

sunflower oil borage seed oil evening primrose oil plum oil