Most products have a life cycle — launched, growing in popularity, reaching peak sales, then eventually declining as consumers move to new alternatives. Understanding this cycle helps a business plan its strategies and manage its product portfolio.
Development: the product is created and tested. Costs are high with no revenue yet — this stage needs investment.
Introduction: the product launches. Sales grow slowly as awareness builds. Competition is minimal but costs remain high.
Growth: demand increases rapidly, sales surge and profit grows. Competitors enter the market. The business increases production and distribution.
Maturity: sales peak then plateau. The market becomes saturated with competitors. Profit margins fall due to competition and heavy promotional costs.
Decline: sales and profits fall as demand wanes and consumers switch to newer alternatives. The business may gradually withdraw from the market or reposition the product.
Extension Strategies
Successful businesses use extension strategies to rejuvenate a product and prolong its profitability. These are applied at the maturity stage, before decline sets in.
Possible extension strategies: update features; change packaging; lower price; increase advertising/marketing; change the design; re-brand.
Real-World Case Studies
Lucozade Sport — a real extension strategy at work
Lucozade itself has been repositioned more than once over its history — from a product associated with recovering from illness in the 1970s, to "Replaces Lost Energy" in 1982, to Lucozade Sport, launched in 1990 to target active consumers through athlete endorsements. A more recent rebrand of Lucozade Sport — still the UK's number one sports drink brand — showed measurable results within six months: brand "involvement" scores up 15%, "persuasion" up 21%, and "call to action" up 28%. This is a genuine, verified example of a re-brand extension strategy successfully reviving a mature product's performance.
Source: verified via search, September 2026 — industry brand-equity reporting on Lucozade Sport's rebrand, cited via packagingnews.co.uk and related brand strategy coverage.
Unilever — reshaping a product portfolio across the life cycle
In 2025, Unilever accelerated a strategic reshaping of its brand portfolio, completing or announcing ten acquisitions and divestments since the start of the year — including the December 2025 demerger of its Ice Cream business and the sale of its snacking brand Graze. At the same time, the company is investing more heavily in higher-growth categories like Beauty & Wellbeing, aiming to grow that share of sales from around 52% to 66%. This shows a large business actively managing its product portfolio across the life cycle in real time — investing in products still in growth, and divesting from mature or declining ones rather than continuing to fund them indefinitely.
Source: verified via search, September 2026 — Unilever's own 2025 full-year results announcement and Directors Talk Interviews coverage.
Sort It: Which PLC Stage?
Tap a description below, then tap the Product Life Cycle stage it best matches.
Introduction
Growth
Maturity
Decline
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Quick Knowledge Check
Short, snappy recall questions — tap to reveal the answer.
Name the five stages of the Product Life Cycle. (2 marks)
At which stage is an extension strategy applied? (1 mark)
Maturity.
Give one example of an extension strategy. (1 mark)
Any one of: update features, change packaging, lower price, increase advertising, change the design, re-brand.
Key Term Flashcards
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Tap a card to flip it, then rate yourself.
Maturity
The PLC stage where sales peak then plateau, the market is saturated, and profit margins fall due to competition.
Extension Strategy
Action taken at maturity to rejuvenate a product and prolong its profitability — e.g. re-brand, new packaging, lower price.
Growth (PLC stage)
Demand increases rapidly, sales and profit surge, and competitors start entering the market.
Product Mix
The full range of products a business sells, often at different stages of the life cycle at the same time.
A*/A Stretch
Synoptic link
Connecting to the Boston Matrix: the Product Life Cycle and the Boston Matrix both help a business manage products over time, but from different angles — the PLC tracks one product's sales over time, while the Boston Matrix compares multiple products against each other at a single point in time, using market share and market growth. A product's Boston Matrix position often (but not always) tracks its PLC stage — a "star" is typically in growth, a "cash cow" in maturity.
Examiner's eye
Don't assume every product follows the textbook curve exactly — some products skip stages, decline suddenly rather than gradually, or (thanks to a successful extension strategy) stay in an extended maturity phase for decades. A strong answer applies the theory to the specific evidence in the case study, rather than assuming a "standard" shape.
Try This With AI
Before using this: AI tools can get facts or mark scheme details wrong, and quality varies by tool. Always check anything factual against your notes or ask your teacher.
Pick a real product you think is at the maturity stage of its life cycle. Ask me to identify the stage, justify it with evidence, and recommend one suitable extension strategy. Mark my justification and tell me if I've used real, specific evidence rather than a vague description.