Use the directions for the exact bond repair treatment on your bottle. Product and version checks separate pre-shampoo routines from leave-in treatments, without diagnosing hair from how it feels.
To use a bond repair treatment, follow the instructions for the exact product and version on your bottle. Some treatments go on before shampoo and must be rinsed out; others go on shampooed hair, require a waiting period before conditioning, and stay in. “Bond repair” alone does not tell you the order, dose or frequency.
Research method: This AI-assisted guide checks OLAPLEX’s current US No.3PLUS page, its dated original No.3 manual, K18’s US leave-in mask instructions and American Academy of Dermatology guidance on October 1, 2026. The comparison concerns application instructions, not a laboratory ranking or personal repair test. Package directions for your version control when they differ from a website or an older guide.
Identify the treatment before planning wash day
Put the bottle beside its instructions. Record the full name, including numbers, “PLUS,” “leave-in” and other qualifiers. A treatment, shampoo, conditioner and oil from the same bonding range are separate products. Do not transfer the directions of one to another because their bottles look similar.
This matters even within one familiar product line. OLAPLEX now lists No.3PLUS Complete Repair Treatment with a three-minute routine. Its original No.3 Hair Perfector manual, dated November 9, 2020, specifies at least ten minutes. Treating those names as interchangeable produces the wrong instructions for someone who still owns the original bottle.
| Exact example | Application point | Timing and finish | Important distinction |
|---|---|---|---|
| OLAPLEX No.3PLUS Complete Repair Treatment | Wet hair, before shampoo | Three minutes; rinse, then shampoo and condition | Current US page; not the original No.3 routine |
| Original OLAPLEX No.3 Hair Perfector | Damp hair, before shampoo | At least ten minutes, then rinse, shampoo and condition in the dated manual | Historical version reference; check your bottle |
| K18 Leave-In Molecular Repair Hair Mask | Shampooed, thoroughly towel-dried hair; skip conditioner beforehand | Four minutes before combing or styling; do not rinse out | A leave-in mask; its conditioning sequence differs |
The table is a source comparison, not a recommendation to buy three treatments or use them together. If your product is absent, answer the same four questions from its own directions: before or after shampoo, how wet the hair should be, how long to wait, and whether to rinse. Leave an unanswered field unresolved instead of borrowing the closest-looking routine.
Follow the exact version’s sequence
Current OLAPLEX No.3PLUS: a pre-shampoo example
The US No.3PLUS page directs generous application from roots to ends on wet hair in the shower. Wait three minutes, rinse, then follow with OLAPLEX shampoo and conditioner. Its main directions specify every one to three washes. Those instructions belong to No.3PLUS, not every bond repair product.
The page identifies this formula as protein-free and says ingredients can change, with packaging providing the current list. That description does not establish whether every other bonding product contains protein, or whether a particular person’s hair will feel light after use. Follow the actual application and rinsing steps rather than turning a formula label into a guaranteed result.
Original OLAPLEX No.3: retain the bottle’s instructions
The original No.3 manual specifies damp hair from root to end, a minimum ten-minute wait, a thorough rinse, then shampoo and conditioner. It describes No.3 as a pre-shampoo repair treatment rather than a protein treatment or hydrating mask. This is a dated source for No.3 Hair Perfector, not evidence that a new No.3PLUS bottle requires ten minutes.
For an older bottle, read its label and ask the manufacturer if the instructions are unclear. Do not substitute an overnight treatment, a dry-hair application or a longer waiting time on the assumption that extra time must improve repair.
K18 leave-in mask: shampoo first and delay other products
K18’s US mask directions say to shampoo without conditioning and towel-dry thoroughly. Apply one to three pumps according to length and density, working from ends toward roots. Wait four minutes before combing or styling, and leave the mask in. The brand allows other products, including conditioner, after that wait. It specifies four to six consecutive washes initially, then use as needed.
This is why a generic “shampoo, condition, add repair mask, rinse” sequence is unhelpful. Write the instruction for your actual bottle into the routine. Do not replace K18’s pump range with a coin-sized dose borrowed from another product, or interpret its initial wash sequence as a permanent schedule for all treatments.
Make a six-field routine card
A useful card records what you will do, rather than claiming to measure repaired bonds at home. Keep it with the product so you can repeat the specified method without remembering a social-media routine.
- Identity: full product name, version, region and the date you checked its instructions.
- Wash position: before or after shampoo, including any restriction on conditioner beforehand.
- Application: wetness, stated amount and areas of hair to cover.
- Timer and finish: waiting period, whether to rinse, and when other products may follow.
- Schedule: the manufacturer’s instruction expressed in washes or dates, with any initial course separate from maintenance.
- Observation: what you used and noticed after drying, plus any discomfort or reason to stop and seek advice.
For observations, use ordinary descriptions: easier or harder detangling, flatter roots, more residue, or no noticeable difference. Record the amount of conditioner, leave-in and oil too. If several products changed together, the card cannot identify which caused the result. These are routine observations, not proof of a molecular change, a diagnosis or a quantified reduction in breakage.
Keep “protein overload” separate from an observation
Stiff, rough or tangled hair does not by itself establish “protein overload.” Neither does stretchy-feeling hair prove that a bonding treatment is needed. Avoid testing a strand until it snaps, assigning a damage score from one sensation, or buying several corrective treatments on that basis.
Start with concrete facts: the full formula, how much was applied, whether it was rinsed as directed, and which other products were used. A protein-free label answers a narrower ingredient question; it does not promise a weightless finish or solve every cause of roughness. Likewise, finding a protein-related ingredient does not establish the cause of a new problem.
If a routine feels heavy, review its amounts and sequence before layering another mask or oil over it. Follow product directions when making changes and record them. A harsh clarifying wash, a household mixture or a longer treatment time is not an automatic remedy for an unexplained result. For continuing breakage after chemical services, ask a qualified professional to assess the hair rather than using the guide as a diagnosis.
Support the routine with gentler handling
The AAD’s healthy-hair guidance recommends conditioner after washing, gentle detangling, and reducing excessive heat. Apply general advice in the product’s stated order; K18’s temporary restriction before its four-minute wait is a specific example. A treatment does not provide permission to increase heat or repeat damaging services.
Use the heat protectant guide to examine a separate styling step; do not assume your repair treatment includes heat protection. An OLAPLEX No.7 oil review concerns a different product and cannot supply No.3’s timing. The Moroccanoil Treatment Light review likewise concerns an oil rather than a substitute treatment sequence.
If you are reviewing conditioning products, the protein-free mask guide and conditioner, leave-in and curl product guide are separate planning resources. Their presence does not certify that any recommended product is compatible with your treatment, color service or extensions.
AAD guidance for people experiencing hair loss recommends dermatology assessment to find the cause. New thinning or shedding should not be treated as a reason to keep increasing a cosmetic repair routine. Stop using a product that causes discomfort and seek appropriate advice for persistent symptoms.
Frequently Asked Questions
Do you use bond repair before or after shampoo?
It depends on the exact product. Current OLAPLEX No.3PLUS goes before shampoo; K18’s leave-in mask goes after shampoo, without conditioner beforehand. Check the full name and version on the bottle.
When should you use a bond repair treatment?
Use the schedule stated for your product and its intended use. Distinguish an initial course from maintenance. One brand’s frequency is not a universal rule for damaged, fine or curly hair.
Do you put bond repair on dry hair?
Only when that product’s instructions specify it. The examples here require wet, damp or towel-dried hair. Do not replace those requirements with dry application to make the treatment seem stronger.
How long does bond repair treatment take to work?
Separate the application timer from a claim about results. No.3PLUS specifies three minutes, the original No.3 manual at least ten, and K18 four before other steps. Following a timer does not prove that your hair has been repaired or guarantee when you will notice a change.